A、 can
B、 may
C、 need
D、 must
答案:A
A、 can
B、 may
C、 need
D、 must
答案:A
A. make
B. made
C. makes
D. making
A. quite
B. too
C. very
D. so
A. 某班所有高个子的学生
B. 所有的正整数
C. 相反数等于它自身的实数
D. 倒数等于它自身的实数
A. save
B. saving
C. saved
D. to save
A. can
B. must
C. should
D. is supposed to
A. going over
B. went over
C. go over
D. to go over
A. 0个
B. 1个
C. 2个
D. 3个
A. 0个
B. 1个
C. 2个
D. 3个
A. 0∈A
B. 3/4∈A
C. {0}包含于A
D. -π∈A
A. serious
B. more serious
C. most serious
D. the most serious