问题
I can’t understandit is that makes him so difficult at school.
A:how
B:what
C:why
D:which
B:what
C:why
D:which
正确答案是：
同类题型
He is taller than his elder brother [ ]
The scientists and engineers are judged ________ how great their achievements are.[ ]
When you feel _____ to watch TV by then, you are all right.
David went to buy some stationary souvenirs my cousin.
Professor Wang _______to give us a talk nextweek.――Really That is good news .