He’s not a perfect child．He sometimes talks back________his parents talk with him．
| A．if |
| B．before |
| C．when |
| D．until |
We must hurry up. There are few minutes _________.
| A．to leave | B．leaves | C．left | D．leave |
His pet dog _______just 100 grams at birth last month.
| A．weighs | B．weighed | C．weigh | D．weighted |
Don’t worry. His temperature will ______ back to normal（正常）if he takes this medicine.
| A．travel | B．rise | C．go | D．drop |
—How many mistakes did you make in the exam, Lily? —_________.
| A．None | B．No one | C．All | D．Nothing |
—How nice the building is! What is it for?
—It _________ be a hotel. But I’m not sure.
| A．must | B．could | C．can | D．may |