There _______ some dictionaries on the shelf.

I ________ go to the theatre, because I don’t like operas at all.

Tom was about to close the window ________ his attention was caught by a bird.

In my opinion,life in the twenty-first century is much easier than _______.

What are you going to do this summer vacation? —I’m going to start a club to help students _____not interested in schoolwork.