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
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I _______ to the party if I________tomorrow.. 
#68072
A
will go; will be invited
B
will go; am invited
C
go; will invite
D
go, have been invited
They will telephone the police and complain about it       the noise     .
#41174
A
if; stops
B
unless; stops
C
if not; stops
D
unless; doesn’t stop
There is a police car in front of the house of our neighbour's. _____ do you think _____ ?
#71986
A
What;has happened
B
What;of happening
C
What;of being happened
D
Whatever;of happening