--- I'd have made a phone call to you, ___________ your telephone number．
--- That’s all right．What was up then?
A．if I know B．had I forgotten
C．if I hadn’t remembered D．but I forgot
The cousins are alike in age, but _____ they are as different as day and night．
A．anyhow B．besides C．otherwise D．moreover
Is it a wonder that _____ little cells can store _____ much energy?
A．such, so B．so, much C．so, so D．such, such
Not having worked out the problem, _____ leave the office．
A．so he was not allowed to B．and he didn’t want to
C．the teacher couldn’t make him D．he couldn’t free himself to
----Why isn’t Cathy here yet?
--- She _________ to be picked up at the station．
A．could wait B．must wait
C．might be waiting D．can be waiting
Don’t give up regardless of difficulty and failure, you’ll never achieve your goals.
A．and B．but C．or D．so
