His sacrifices for the country were never officially _____, which made all of us feel discouraged.
A.acknowledged B.appealed C.associated D.approved
What a pity! I missed meeting my friend at the airport because my car was _____ in the traffic jam.
A.broken up B.held up C.kept back D.kept up
--- 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