________ you don’t lose heart, I’m sure you can pass the coming examination.
A．Unless B．If not C．As long as D．Although
—How much of the foreign expert’s speech have you understood?
—Almost nothing. I wish I ________ harder at English.
A．worked B．had worked C．would work D．were working
At the crossroads, you have to drive very ________ to avoid traffic accidents.
A．quickly B．cautiously C．curiously D．perfectly
David has to admit the fact ________ he has fallen behind the others in his class.
A．whether B．that C．why D．when
—Where are you going during the summer vacation?
—I’ve found a nice beach ________ I can enjoy swimming.
A．that B．when C．where D．which
—I’ll be away on a business trip for a week. Would you mind looking after my dog?
—Not at all. ________.
A．I’d like to B．I’d rather not C．I’d like it D．I’ve no time
