We saw ____ audience clapping their hands when ______ popular singer appeared on the stage．
| A．the; the | B．the; 不填 | C．an; a | D．不填; the |
I’d like to know _________ Chinese.
| A．when he began to learn |
| B．where did he begin to learn |
| C．when did he begin learning |
| D．for how long he begins to learn |
—Do you mean that we have lost our way?
—_________!
| A．All right | B．No problem |
| C．Certainly | D．Exactly |
— Jenny, it seemed that your partner didn’t dance well.
— Oh, _____Three boys to choose from and I picked the stupid one.
| A．you can’t be serious! | B．couldn’t be better. |
| C．don’t mention it. | D．just my luck! |
Jeff is hard-working. He seldom, _____, comes to work late and leaves off early.
| A．if so | B．if ever | C．if any | D．if not |
You won’t stand out in the team _____ you train harder than other players.
| A．unless | B．once | C．since | D．when |