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
________ it snowed heavily yesterday, nobody in our class missed the lesson.
#56980
A
Though
B
Because
C
Unless
D
Since
-- _______exciting news! --Yes, the 12-year-old boy in Beiingwas saved after the successful heart transplant.
#55418
A
What a
B
What
C
How a
D
How
My grandparents like to live in a house _______ is not very big but bright and comfortable.
#58280
A
that
B
who
C
what
D
whose
I thought the actor was famous, _________ none of my friends has ever heard of him.
#56363
A
and
B
or
C
so
D
but
The earth will become worse and worse ________ we do something to stop her from being polluted.
#55977
A
if
B
even if
C
when
D
unless