_________difficult questions the teacher is asking! Only a few students can answer them!
#65677
A
What a
B
How a
C
What
D
How
推荐题目
_____ good time we are having!
#66413
A
What
B
What a
C
How
D
How a
    useful invention(发明) the computer is!
#66343
A
What a
B
What an
C
How a
D
How an
It’s _______ that we will never forget it. 
#66677
A
such a nice city
B
a such nice city
C
a so nice city
D
so a nice city