Do you often help your father ___ the farm work during the summer vacation?
| A．for | B．on | C．in | D．with |
---Would you mind my sitting here ____ lunch? ---______.
A. and have, No, not at all C. and having, No, thank you.
C. to have, Never, go ahead. D. and have, Oh, it’s my pleasure.
It was rude ______ you to stare at the foreigner when he passed by just now.
| A．of | B．for | C．with | D．to |
—Where is Bob? I cannot find him anywhere.
—He have been off long. I heard him make a call 
just now.
| A．shouldn’t | B．can’t | C．mustn’t | D．needn’t |
_______ is known to us all is that Madame Curie, _______ life was devoted to science, won
the Nobel Prize twice.
| A．As; whom | B．What; whose | C．It; whom | D．That; whose |
The tablecloth _____ 18 by 20 feet.
A. is measured B. measures C. measure D measuring