Not everyone has realized what ________important part the balance of ________nature plays in their life.
A.an;the | B./;the | C.an;/ | D.the;/ |
The nurse treated the naughty boy very kindly, but her patience _____ at last.
A.used up | B.gave out |
C.run out | D.was run out |
You can use a large plastic bottle, _____ cut off, as a pot to grow your plant in.
A.the top is | B.with its top |
C.whose top | D.the top of which be |
The boss _____ the workers how to do it, or the accident couldn’t have happened.
A.can’t have told | B.ought to tell |
C.could have told | D.mustn’t have told |
The reason _____ their failure you know is ______ they didn’t get fully prepared for the experiment.
A.why…that | B.that…why |
C.why…because | D.for…that |
Susan could be a very attractive girl but she ____ no attention to her clothes.
A.had paid | B.paid | C.pays | D.would pay |