12．We have to study for a bright future, so we have to lose some sleep_________we're worn out.
| A．in case | B．as though | C．as long as | D．even though |
It’s getting late --- time to .
| A．set off |
| B．set up |
| C．set an example |
| D．set down |
His writing is so confusing that it’s difficult to make out _____it is he is trying to express.
| A．that |
| B．how |
| C．who |
| D．What |
— We got here Tuesday afternoon.
— _____ Why didn’t you call us earlier?
| A．Good luck! |
| B．You did? |
| C．It’s no surprise. |
| D．You are welcome |
It is obvious to the students ______ they should get well prepared for their future.
| A．as |
| B．which |
| C．whether |
| D．that |
She the path as the trees around her became thicker. (2012～2013•安徽宿州十三校期中）
| A．lost sight of |
| B．caught sight of |
| C．lost sight |
| D．caught sight |