The clever boy made a hole in the wall, _______ he could see _____ was going on inside house. 
#73752
A
which; what
B
through which; what
C
through that; what
D
what; that
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 The question is too difficult and we found ________.
#66590
A
it not easy to answer it
B
it was not easy for us to answer it
C
it’s not easy to answer
D
it not easy to answer
.____ tomorrow, I will pay a visit to my grandparents.
#69066
A
However the weather is like
B
However is the weather like
C
Whatever the weather is like
D
Whatever is the weather like