The mother didn’t know ____to blame for the broken glass as it happened while she was out.
| A．who | B．when | C．how | D．what |
— More than thirty students competed ______ each other in the English competition.
— But they could only compete ______ three medals.
| A．against; with | B．against; on | C．with; for | D．on; for |
--It’s reported that scientists have ________ an effective way to deal with H1N1.
--Really? That’s great!
| A．caught up with | B．come up with |
| C．agreed with | D．compared with |
---- Did you have ________ fun at the party?
---- Yes. It’s ________ shame that you missed it.
| A．a; a | B．/; / | C．/; a | D．a; / |
It was my sister first had the idea to cycle along the entire Mekong River from ______ it began to where it ends.
| A．who; which | B．who; where | C．that; which | D．that; what |
In fifteen terrible seconds a large city .
| A．lied in ruin | B．lay in ruin | C．lied in ruins | D．lay in ruins |