A、 can
B、 must
C、 may
D、 need
答案:C
A、 can
B、 must
C、 may
D、 need
答案:C
A. needn't
B. can't
C. shouldn't
D. mustn't
A. π/4
B. π/2
C. π
D. 2π
A. 0个
B. 1个
C. 2个
D. 3个
A. 5个
B. 6个
C. 7个
D. 8个
A. careless
B. stupid
C. honest
D. humorous
A. turn up
B. give up
C. stay up
D. grow up
A. exercises
B. problems
C. skills
D. rules
A. I go,too
B. so will I
C. neither will I
D. so do I
A. in
B. with
C. about
D. for
A. surprised
B. sorry
C. glad
D. excited