Oil prices have risen by 32 percent since the start of the year，________ a record US $57.65 a barrel on April 4.
| A．have reached | B．reaching |
| C．to reach | D．to be reaching |
_____, Carolina couldn’t get the door open.
| A．Try as she might | B．As she might try | C．She might as try | D．Might she as try |
Don’t worry. There’s still time ____a newspaper before the bus leaves.
| A．left to buy | B．leaving to buy | C．left buying | D．leaving buying |
Every Monday morning, students in our school would stand at attention, watching the national flag ______.
| A．raising | B．rising | C．being risen | D．being raised |
You can’t imagine the difficulty he ________onto the cliff and saving the boy in trouble.
| A．had to climb | B．had climbed | C． had climbing | D．had on climbing |
Our daughter doesn’t know what to ____at the university; she can’t make up her mind about her future.
| A．take in | B．take up | C．take over | D．take on |