从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21．―Karen, can I talk to you for a minute?
―Sure, ________?
A．how come B．what’s up C．how’s that D．what for
22．With a travelling speed of up to 350 kilometres per hour, the railway to be built between Beijing and Shanghai _______ the journey time from 12 hours to 5 hours．
A．cuts B．will cut C．is cutting D．has cut
.23．Young people go to college with the expectation that educated people get a higher pay.
A．good B．better C．best D．the best
24．Oct.1st, is our National Day, is always celebrated with singing and dancing.
A．as B．that C．when D．which
