为什么是选b,
All the doctors in the hospital insisted that he ____ badly wounded and that he _____ at once.
[ d ]
A.should be; be operated on
B.were; must be operated on
C.be; was operated on
D.was; be operated on
答案解析说第一个insist是坚持说的意思,但是如果说是坚持认为的意思的话,