It is uncertain      side effect the medicine will bring about , though about one thousand patients have taken it.
#30966
A
that
B
whether
C
what
D
how
推荐题目
Jack, try to learn some relaxation exercises and do them ______ you feel stressed.
#33261
A
for every time
B
every time
C
by the time
D
some time
The man, ____ is parked in front of our school, is a well-known politician.  
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A
whose white car      
B
of whom the white car  
C
of whose white car
D
the red car of his