Barbados (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Belgium (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Bahrain (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Bahamas (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Belize (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Benin (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Azerbaijan (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Argentina (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Australia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Armenia (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Austria (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Bosnia and Herzegovina (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Burkina Faso (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Botswana (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Bulgaria (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Bhutan (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Brunei (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Brazil (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Central African Republic (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.

Cape Verde (Video and Exercises) This material contains a worksheet that can be worked on with the help of a linked short explanatory video. The same material is also available with additional information text.