-- Did you visit the zoo?
--- No, we_______have visited it, but we spent too much time shopping.
| A．shouldn’t | B．can’t | C．could | D．must |
They began to consider what use could ___ the natural resources（资源）.
| A．be made from | B．be made of |
| C．be made up of | D．be made into |
____ number of students in our class ____ larger than that in theirs.
| A．A, is | B．The,is |
| C．A , are | D．The , are |
He refused to ___ to the terrible weather only at the last moment because he had no choice.
| A．give up | B．give in |
| C．give away | D．give off |
It’s known to all that life’s ____ is full of hardships.
| A．tour | B．trip | C．travel | D．journey |
I _______ Beijing in a few days. Do you know when the earliest plane ________?
| A．leave; is taking off |
| B．am leaving for; takes off |
| C．is leaving off; is taking off |
| D．leaves; takes off |