问题补充:
It is suggested that some skills teachers to teach the children in these mountainous areas .
A. must be sent
B. be sent
C. should send
D. should send for
答案:
A. must be sent
(答案→)B. be sent
C. should send
D. should send for
解析:suggest构成从句,从句中用虚拟,should+do,should可省略。