---____ do you study for a math test? ---I study math ____ lots of exercises.
#40941
A
What, by doing
B
How, by doing
C
How, doing
D
What, doing
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I didn’t  know ______ to London.
#40777
A
how to go
B
where to go
C
what to go
D
how go
 His talk had __________ me.         
#41264
A
a big effect to
B
a deep effect on
C
a deep effect for
D
a deep affect on
You had better _____ because you have to drive back home.
#41217
A
not drinking
B
not drink
C
don’t drink
D
not to drink