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
推荐题目
Lessons can be learned to face the future, ________ history cannot be changed.
#30007
A
though
B
as
C
since
D
unless
Allow children the space to voice their opinions, ____ they are different from your own.
#31756
A
until
B
even if
C
unless
D
as though
Paul was not allowed to work he was fully recovered from the flu.
#30379
A
even if
B
whether
C
because
D
until
Last night Mr. Crook didn’t come back at the usual time. ______, he met some friends and atayed out unitl midnght.
#80529
A
Meanwhile
B
However
C
Instead
D
Yet