--- Listen! David is talking happily with his mother in the next room.
--- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
| A．should | B．must |
| C．can’t | D．mustn’t |
—Did you see Tom yesterday? —No, I ___________ him for a long time.
| A．didn’t see | B．hasn’t seen | C．saw | D．haven’t seen |
Come here, I’ll tell you ___________ about your study. —OK, we’re coming.
| A．anything important | B．something important |
| C．important anything | D．important something |
—What animal do you like best? —I like __________ best.
| A．tigers | B．apples | C．vegetables | D．trees |
Huang Wei rides a bike very well. Who taught him? —No one. He taught _________.
| A．him | B．he | C．his | D．himself |
—You won’t pass the exam ________ you don’t work hard. —OK, I’ll do my best.
| A．and | B．but | C．if | D．so |