—Where is Lu Wenjie? 
—I have no idea．He__________ be in the library.
| A．can | B．must | C．might | D．shall |
—Did he admit for what he'd done?
—________.
| A．No wonder | B．Well done |
| C．Not really | D．Go ahead |
As is known to all, a block of ice will ________ if it is exposed to heat.
| A．increase | B．cut | C．decrease | D．lower |
Last year the number of death increased ________ 2%～5% ________ the year before last.
| A．to; comparing to | B．to; comparing with |
| C．by; to compare with | D．by; compared with |
“I don't think it's my ________ that the TV blew up. I just turned it on，that's all，” said the boy.
| A．error | B．mistake | C．fault | D．duty |
We ________ here at lunch time; we were delayed at the airport, though.
| A．could be | B．should be |
| C．must have been | D．would have been |