A、 can
B、 must
C、 should
D、 is supposed to
答案:A
A、 can
B、 must
C、 should
D、 is supposed to
答案:A
A. to
B. by
C. with
D. in
A. 2x+1
B. 2x-3
C. 2x-5
D. 2x-7
A. told
B. is told
C. will tell
D. was going to tell
A. may
B. can't
C. must
D. needn't
A. 24
B. 25
C. 26
D. 28
A. 15
B. 16
C. 14
D. 13
A. so
B. very
C. too
D. much
A. 8
B. 9
C. 10
D. -10
A. serious
B. more serious
C. most serious
D. the most serious
A. 0
B. 1
C. -1
D. 不存在