I have two grammars, ______are of great use.
#73806
A
all of which
B
either of which
C
both of that
D
both of which
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I can't figure out ________ it is that makes him so difficult at school.
#67203
A
how
B
what
C
why
D
which
This is my own restaurant. You can come to eat here ____ you like.
#67624
A
wherever
B
whatever
C
whichever
D
whenever
________ the police thought he was the most likely one，since they had no exact proof about it，they could not arrest him.
#67451
A
Although
B
As long as
C
If only
D
As soon as
I borrowed several books from the library, ________ are about English study.
#66982
A
two of them
B
and two of which
C
two of which
D
two of what