问题
I try to understand __________ that prevents so many Chinese from being as happy as one might expect.
A:why is it
B:what is it
C:why it is
D: what it is
B:what is it
C:why it is
D: what it is
正确答案是：
同类题型
______ the students like the paintings. Which is right? [ ]
What you should remember is that we should always keep____ in an emergency .
The man to ______ my father is speaking is my uncle.
Do you enjoy________ in the sea
The tour pal lost his way in the mountain; ________made things worse was that it began to rain.