Modal verbs of speculation

On the left hand side you have the grammar explanation. On the right hand side you have an exercise to test your knowledge of the grammar. Complete the second sentence so that it has the same meaning as the first sentence. Write between 2 and 5 words. You must use the key word without changing it. Each question has a clue, so if you need some extra help, click on the yellow word Clue? below the question. If you want to hide the clue, click on it and it will disappear. Think hard now...