Test your Understanding of Auxiliary Verbs
In each of the following sentences an auxiliary verb is missing. Write the missing auxiliary verbs on a piece of paper and then check the following page for the answers.
- He _____ come to school yesterday because he was ill.
- She _____ been working in the garden since two this afternoon.
- He _____ finished his homework by the time arrived.
- I'm afraid I _____ be able to come to the party. I have to study.
- You've visited London, _____ you?
- They _____ going to attend a meeting in Chicago next week.
- Why _____ you buy that?! It's ugly!
- She _____ often go to the movies.
- He _____ watching TV. He's doing his homework at the moment.
- They _____ been playing tennis for two hours.
- I don't like country music. - Neither _____ I.
- They won't come to the party, _____ they?
- Mom _____ been working for two hours when I telephoned.
- I think they are fantastic! - So _____ she.
- What _____ they doing?
- Mary hasn't enjoyed herself so much for a long time. - Neither _____ I.
- Mike _____ go on vacation last summer. He was too busy.
- He's studying Russian this semester, _____ he?
- I _____ just been to the bank.
- How long _____ you been working for this company?

