Knowing how long the test would last, the students who finished ____ back and waited until the end of the exam.
| A．settle | B．settled | C．settling | D．to settle |
About _______ gene-targeting drugs are already in testing pipeline. It won’t be long ______ they are put into effect.
| A．two dozen; before | B．two dozens; that |
| C．two dozens of; before | D．dozens; that |
---_________________
---Thank you. I certainly will.
| A．Happy New Year to you! | B．Don’t forget to post the letter! |
| C．May I help you? | D．Please remember me to your family. |
When you go by train, please see to it_______ you take an express, _______ that stops only at big stations.
| A．that, one | B．/, the one | C．that, it | D．/, it |
She had to lie to the company and ______ a man in order to get a job, ______ rather strange.
| A．pretending as, looked | B．pretended to be, looking |
| C．pretending as, was looked | D．pretended to be, looked |
The little girl couldn’t ________ the problem. She wasn’t ________ clever.
| A．get through, very | B．make out, much |
| C．work out, that | D．get across, so |