—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
—Oh, dear! She _______ a lot of difficulties!
| A．may go through | B．might go through |
| C．ought to have gone through | D．must have gone through |
Suddenly my friend noticed another classmate passing by the restaurant and he________to stop him.
| A．rose to the feet |
| B．rose to his feet |
| C．raised his feet |
| D．rose on his feet |
She________Japanese when she was in Japan.Now she can speak it freely.
| A．picked out |
| B．made out |
| C．made up |
| D．picked up |
Care should be taken at all times to________the instrument from dust and damp.
| A．separate |
| B．protest |
| C．divide |
| D．protect |
It’s often less expensive to buy goods in ________quantity，but you’d better examine ________ quality before buying them.
| A．/；the |
| B．the；/ |
| C．a；the |
| D．the；the |
I thought I was going to fail the exam，but I succeeded ________.
| A．after all |
| B．first of all |
| C．in all |
| D．at all |