The crazy fans___________ patiently for two hours, and they will wait till the movie star arrives.
| A．are waiting | B．had waited |
| C．have been waiting | D．will wait |
In ____old society many yang women died by so strange and cruel ___custom.
| A．/不填//; a | B．不填 ；the |
| C．the；a | D．An ; a |
No matter how bright a talker you are, there are times when it’s better ______ silent.
| A．remain | B．be remaining | C．to remain | D．having remained |
We laugh at jokes, but seldom __________ about how they work.
| A．we think | B．think we | C．we do think | D．do we think |
There is ___________ as a free lunch.
| A．not such thing | B．no such a thing | C．no such thing | D．such no thing |
He works as an engineer now, but he _____ on a farm for three years.
| A．has worked | B．worked | C．was working | D．had worked |