As we all know, parents are concerned _____ their children’s study, because it is concerned ____ their future .
| A．about, with | B．about, for |
| C．for, about | D．with, about |
If you want to book tickets for the 2012 Olympic Games, just call 00952012. It ______ be simpler.
| A．mustn’t | B．won’t | C．needn’t | D．couldn’t |
________ it is so hot, I guess we can’t do anything until after dark.
| A．In case | B．Now that | C．Even if | D．As though |
You should be more careful, _______ you might meet with some accident.
| A．meanwhile | B．otherwise | C．although | D．however |
One _______ fact is _______ Crystal always keeps a toothbrush in his pocket for good luck when he is the host of the Academy Awards.
| A．little-knowing ; 不填 | B．well-known ; which |
| C．little-known ; what | D．little-known ; that |
He hurried to the booking office only ＿＿＿ that all the tickets had been sold out.
| A．to tell | B．to be told | C．told | D．telling |