Complete the sentences, using the correct form of the words in brackets.

The (hot)

 makes everybody very drowsy 

during the lesson in class.

Choose the correct answer A, B, C or D to complete each sentence.

Artificial Intelligence (AI) is an area of __________concerned with making computers copying intelligent human behaviour.

Choose the correct answer A, B, C or D to complete each sentence.

 Computers that once ___________ up entire rooms are now small enough to put on desktops and into wristwatches.

Choose the correct answer A, B, C or D to complete each sentence.

A forest fire ________ quickly and ________ many trees.

Choose the correct answer A, B, C or D to complete each sentence.

The tornado caused a massive ________ to the town.

Choose the correct answer A, B, C or D to complete each sentence.

Hemp was grown throughout history ________ its versatility; it can be used to make many different things.

Choose the correct answer A, B, C or D to complete each sentence.

Global warming ________ if there weren't too much carbon dioxide in the atmosphere.

Choose the correct answer A, B, C or D to complete each sentence.

 Passengers __________ to smoke in the train.