Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.
#33567
A
while
B
or
C
for
D
so
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The man, ____ is parked in front of our school, is a well-known politician.
#34099
A
whose white car
B
of whom the white car
C
of whose white car
D
the red car of his
—I don’t think I need to buy that toy penguin—it’s for kids.—__________you don’t have kids, buy it anyway because it looks good.
#31098
A
As if
B
Even if
C
In spite of
D
Even so
---How long has your brother been working here?---_______ he graduated from college in 2007.
#31738
A
When
B
Until
C
Long before
D
Ever since
If you keep on your research, you’ll find out the result _______.
#32993
A
in time
B
at no time
C
on time
D
at the same time