October 15 th is my birthday, ________ I will never forget. 
#73334
A
when
B
that
C
what
D
which
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London,______ last year, is a nice old city.
#73949
A
that I visited
B
which I visited
C
I visited
D
where I visited
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
. _____is known to us all, America is a developed country____ the first world.
#74089
A
As; belonging
B
which; belonged
C
as; belonging to
D
which; belonged to
—Let’s go fishing if it _____ this weekend.—But nobody knows if it _______.
#41349
A
is fine, will rain
B
will be fine, rains
C
will be fine, will rain
D
is fine; rains
______ well, you need to have a good sense of balance. 
#67785
A
Danced
B
To dance
C
Dance
D
Dancing