We often plant _______trees every year.
| A．thousand | B．thousand of |
| C．thousands of | D．thousands |
People who eat a balanced diet should be healthier than ______ who only eat meat.
| A．those | B．that |
| C．this | D．they |
I prefer playing basketball to ______ because I like outdoor activities.
| A．stay at home | B．staying at home |
C．make friends | D．making friends |
My father wants to give up ______, but it’s hard for him to ______.
| A．smoke; give up it |
B．smoking; give up it |
C．to smoke; give it up |
D．smoking; give it up |
—Is that Lucy’s cousin, Anna?
—No, it ______ her. She has gone to Paris.
| A．mustn’t be | B．might be |
| C．can’t be | D．could be |
I’ll have an interview tomorrow, so I need to get my shoes _________.
| A．cleaned | B．cleans |
| C．to clean | D．cleaning |