I felt very tired when I got home. and I _______ straight to bed.
A. go B. went
C. had gone D. have gone
Nowadays, many people walk to work ________ Copenhagen Conference calling for living a low-carbon lifestyle to cope with global warming.
A. in response to B. in relation to
C. in addition to D. in opposition to
Helen alway s helps her mother even though going to school _____ most of her day.
A. puts up B. makes up
C. saves up D. takes up
During the last three decades, the number of people participating in physical fitness programs ________ sharply.
A. was increasing B.has increased
C.had increased D.will be increasing
You can imagine the difficulty they have ________ such a large population.
A. fed B. to feed
C. feeding D. been fed
____ apple fell from the tree and hit him on ______ head.
A. An; the B. The; the
C. An; 不填 D. The; 不填
