Her father works as a ______ in a hotel and her mother a ______ in a private company.
| A．cooker, typewriter | B．cook, typist |
| C．cooker, typist | D．cook, typewriter |
All possible means ___ been tried to stop the air______.
| A．has, polluted | B．have, polluting |
| C．have, being polluted | D．has, being polluted |
It’s reported that ________ young ____ to be rebellious against ____ parents’ instructions nowadays.
| A．/, tends, his | B．the , tend, their | C．the , tend, his | D．a, tend, his |
It was__ he said__ disappointed me.
| A．that；what | B．what；that | C．what；what | D．that；that |
If you want to do the experiment again, you had better be more careful_______ you made a mistake.
| A．when | B．why | C．where | D．that |
------ He should have been warned of the danger.
------_________, but he wouldn’t listen to me.
| A．So he was | B．So was he | C．So should he | D．So he should |