Actually，information technology can_____the gap between the poor and the rich because all can get what they want at the same time．
| A．break | B．1ink | C．bridge | D．combine |
When and where he came here _______ yet.
| A．isn’t known | B．aren’t known | C．has not known | D．have not been known |
Dandy left word with my secretary _____ he would call again in the afternoon.
| A．that | B．who | C．which | D．as |
It is obvious to the students ______they should get well prepared for their future.
| A．which | B．that | C．as | D．whether |
All of your hard work will_________.
| A．pay for | B．pay back | C．pay up | D．pay off |
Keep _______ when I take your photograph.
| A．calm | B．quiet | C．still | D．silent |