Comoros (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.

Angola (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.

Antigua and Barbuda (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.

Afghanistan (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.

Albania (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.

Algeria (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.

Andorra (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.

Belarus (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.

Bangladesh (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.

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.