_____ we stood at the top of the building，we were able to enjoy the town below clearly.
| A．As | B．Although | C．Unless | D．Until |
______ Mid Autumn Festival of this year falls on______ Saturday．
| A．The, × | B．×, the | C．The, a | D．×, a |
We must take measures to protect the environment from ______．
| A．polluting | B．being polluted | C．polluted | D．pollute |
I was just _______to go out when the telephone rang ．
| A．/ | B．about | C．likely | D．off |
Doing morning exercises _______ our health and we _______ it．
| A．benefits to; benefit | B．benefits; benefit from |
| C．benefits from; benefit | D．benefits; are benefited by |
He has been doing the job for many years, but has never felt ________ it, though his workmates think it is a ________ one．
| A．tired of; tired | B．tired of; tiring | C．tiring of; tired | D．tiring of; tiring |