They ____ so tired if they ____ for a whole day.
A. wouldn't be feeling; weren't walking
B. wouldn't be feeling; hadn't been walking
查看答案
________ terms, we would go bankrupt.
A. If we accept
B. If we should accept
C. If we had accepted
D. If we are to accept
There was an accident in this street this morning and______ there has been asevere congestion of traffic.
A. until that
B. since that
C. for which
D. after that
Kennedy_____ in the library every night for the last three months.
A. studied
B. studies
C. has been studying
D. is studying
ln fact , some scientists worry at 100 years ______ theremay be no whales left.
A. since now
B. from now
C. before now
D. after now