—I called you this morning, but nobody answered.
—I _______ the flowers in my garden at that time.
| A．watered | B．was watering | C．water | D．am watering |
Helen caught a cold the day before yesterday. But she’s ______ today.
| A．much better | B．more better | C．gooder | D．Good |
—How many students are there in your school? —About_______ students, I think.
| A． two thousand | B．two thousands |
| C．two thousand of | D．two thousands of |
Tom is ______ of the six boys.
| A．strong | B．stronger | C．the strongest | D．more strong |
——Must I take the medicine every day?—No, you _______.
| A．mustn’t | B．don’t |
| C．don’t have to | D．can’t |