It is written clearly in the requirements that all passengers _______ check onto board thirty minutes before the plane takes off.
| A．may | B．can | C．will | D．shall |
Information has been put forward ____ more middle school graduates will be admitted into universities.
| A．while | B．that | C．when | D．as |
Energy is ____makes thing work..
| A．what | B．something | C．anything | D．that |
The manager came over and asked the customer how____
| A．did the quarrel came about | B．the quarrel had come about |
| C．had the quarrel come about | D．had the quarrel come about |
____he does has nothing to do with me.
| A．whatever | B．No matter what | C．That | D．If |
This is the house _________ the great man Mao Zedong was born 110 years ago.
| A．why | B．that | C．about which | D．in which |