Many people are grateful _______ ORBIS nurse _______ their help.
| A．to, for | B．/, for | C．at, of | D．toward, at |
—Where did you get these old doors?
—From the old houses which were________by the workers．
| A．taken down |
| B．pulled down |
| C．turned down |
| D．put down |
Things should________here before you enter the Great Museum．
| A．keeps |
| B．keep |
| C．be kept |
| D．are kept |
—There are only a few old city walls left．
—Yeah．Most of them________in the 1960s．
| A．pulled down |
| B．have pulled down |
| C．had pulled down |
| D．were pulled down |
—Mary，I have never seen a zoo that is________for animals to live in．
—Neither have I．
| A．possible |
| B．suitable |
| C．enjoyable |
| D．pleased |
—Do you know Amy Hayes?
—Of course，I know．She is the woman who built a house________rubbish．
| A．by |
| B．out of |
| C．from |
| D．into |