You ________ touch the chemical, or you ________ get burnt.
| A．can’t; will | B．mustn’t; will |
| C．may not; would | D．shouldn’t; should |
—I’m sorry. That wasn’t of much help.
—Oh, ______. As a matter of fact, it was most helpful.
| A．sure it was | B．it doesn’t matter |
| C．of course not | D．thanks anyway |
It was the belief _____ Alex Haley could find his root in Africa ____ made him decide to go to Zambia.
| A．/; which | B．which; that | C．that; which | D．that; that |
—Robert is indeed a wise man.
—Oh, yes. How often I have regretted ______ his advice!
| A．to take | B．taking | C．not to take | D．not taking |
—Tommy is planning to buy a car.
— I know. By next month, he ____ enough for a used one.
| A．saves | B．saved | C．will save | D．will have saved |
Joseph _____ to evening classes since last month, but he still can’t say “What’s your name?” in Russian.
| A．has been going | B．went | C．goes | D．has gone |