Is this the reason ______ at the meeting for his carelessness in his work?
| A．What he explained | B．how he explained |
| C．he explained | D．why he explained |
The first thing ________ we should do is to master the basic grammar.
| A．which | B．that | C．as | D．of which |
Diamond, _________, is the hardest of all materials.
| A．like we know | B．since we know | C．we know | D．as we know |
He is not such a man ________ cares for himself only.
| A．who | B．that | C．whom | D．as |
David was extremely excited at the good news that he would get a chance to the Rock Club to see the great man he admired ___________.
| A．in his honor | B．in the distance | C．in the shadow | D．in the flesh |
We can hardly ________ what he really means on this controversial problem, as he doesn’t show his clear stand to anyone of us.
| A．stick out | B．let out | C．try out | D．figure out |