The chair looks rather hard, but in fact it is very comfortable to __________.
| A．sit | B．sit on |
| C．be seat | D．be sat on |
They have no idea at all____.
| A．where he has gone | B．where did he go |
| C．which place has he gone | D．where has he gone |
This is ___the shenzhou V Spaceship landed.
| A．there | B．in which | C．where | D．when |
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 |