21. —What did you think of _____ president?
—I didn’t care for him at first, but after ______ time I got to like him.
| A．the, a | B．/, the | C．the, the | D．/, a |
The doctor thinks he will pull now. His temperature has gone down.
| A．together | B．through | C．over | D．around |
For miles around me there is nothing but a desert, without a single plant of tree .
| A．in sight | B． on the earth | C．at a distance | D．in a place |
He used to be very shy but he has grown it now.
| A．without | B．over | C．away | D．out of |
So far, several ships have been reported missing the coast of Bermuda Island.
| A．off | B．along | C．on | D．around |
They always lay a large supply of tinned food in winter in case they are snowed up.
| A．out | B．off | C．in | D．with |