More than a dozen students in that school ____ abroad to study medicine last year.
| A．sent | B．were sent | C．had sent | D．had been sent |
It is thought that Zheng He, a Chinese in the Ming Dynasty, may have been the first person who _____________America from the East.
A set out toB. set about to
C. set sail to D. set sail for
I don’t care ____ or not you like the plan.
| A．if | B．whether | C．that | D．how |
The old couple looked at the plane with their son on it until it was ______.
| A．at the first sight | B．out of sight |
| C．in sight | D．at the sight of |
“Come with me. You will be all right.” He took Polly’s hand, “________ the step here.”
| A．look out | B．watch out for |
| C．look at | D．watch over |
It gives me the chance to _______ the help that people give me when it’s sunny.
| A．pay | B．pay off |
| C．pay for | D．pay back |