It is obvious to the students __________ they should get well prepared for their future.
| A．as | B．which | C．whether | D．that |
My most devoted friend, Professor Yang, _______ often go hiking when he lived in the mountain that was covered with forest.
| A．would | B．should | C．could | D．might |
— Have you apologized to Mr. Jack?
— I’d shoot myself_______ I apologize to him.
| A．after | B．when | C．before | D．as soon as |
I work in a key middle school the teaching quality is a major concern.
| A．how | B．which | C．where | D．that |
Villagers of the danger soon after the big earthquake in Japan，or more people would have lost their lives in the tsunami．
| A．were warned | B．had been warned | C．have been warned | D．are warned |
It remains ________ whether the students will benefit from the monthly exams.
| A．seeing | B．to be seen | C．to see | D．to have seen |