She knocked ________a cup of tea.

The employees consider their boss unfair and unreasonable because he is not _________ in dealing with company affairs.

_____ the government agrees to give extra money , the theatre will have to close.

—It is _______he often fails in exams_______ makes his parents worried about him.—So, he has to work whole-heartedly.

.On April Fool’s Day people often play tricks _____ others.