"You ____be so tired that you had to stop to rest."
A.should | B.can't | C.must | D.mustn't |
This church is as old as, if _____ than, that one.
A.no older | B.not older | C.no old | D.not old |
Her pronunciation is as good as, if ____than, her teacher's.
A.no better | B.not better | C.no good | D.not good |
In that month, he earned as much as, if ____ than, $40 000.
A.no more | B.not more | C.no much | D.not much |
The research is so designed that once _____ nothing can be done to change it.
A.begins | B.having begun | C.beginning | D.begun |
If _____ carefully, the experiment will be successful.
A.do | B.does | C.done | D.doing |