They were surprised that a child should work out the problem____ they themselves could not.
#31497
A
once
B
unless
C
while
D
if
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It was in this house ______ he was born and grew up.
#33581
A
that
B
where
C
which
D
when
        I toured Jiu Zhai Gou, I was deeply impressed with its beautiful scenery.
#31483
A
For the first time
B
At first
C
It was the first time
D
The first time
_____ snacks and drinks, but they also brought cards for entertainment when they had a picnic in forest.                 
#80222
A
Not only they brought
B
Not only did they bring
C
Not only brought they
D
Not only they did bring