Frank often wears a mask ________he can keep fit in the foggy and hazy (霾) weather.
#55993
A
only if
B
until
C
so that
D
even though
推荐题目
We will give you a good price ________ you are thinking of buying it.
#55629
A
until
B
and
C
so that
D
if
—Ipreferspeaking to listeningin English learning.—Oh, really! I think you should be good at ______ of them.
#58372
A
both
B
neither
C
some
D
all
______ many children like KFC, I think they’d better try not to eat it too often.
#58513
A
Because
B
When
C
Although
D
If