We _____ three thousand new words by the end of last year.
| A．had learned | B．have learned |
| C．learned | D．will have learned |
—I am afraid that I can’t finish the task successfully.
—Don’t worry. You_____ plenty of time to do it.
A. will be given
B. give
C. will give
I won’t go to tomorrow’s party_____ I am invited.
A. if B. unless C. When
—It is getting cold. Would you mind_____ the window?
—Of course not.
A. closing B. to close C. closed
—Who’s singing in the garden?
—It _____be Mr. Brown. He always practices singing at this time.
A. must B. can’t C. need
Little Tom _____computer games when his mother got home.
A. is playing B. plays C. was playing