Mountain climbing ________ be very tiring, and many people feel sick ________ the atmosphere gets thinner.
#31554
A
may; while
B
can; as
C
must; though
D
should; for
推荐题目
A small car is big enough for a family of three ________ you need more space for baggage.
#30682
A
once
B
because
C
if
D
unless
They looked very excited they had won the football game.
#30122
A
even though
B
even if
C
though
D
as if
David worked hard at his lessons ____ he gained high grades in the exams.
#31511
A
so that
B
in order to
C
though
D
because
My brother can ride a horse and swim, and he can shoot _______.
#33490
A
as well
B
also
C
as well as
D
either
