Frank often wears a mask _____ he can keep fit in the foggy and hazy (霾) weather.
#55316
A
only if
B
until
C
so that
D
even though
推荐题目
----Why do you look so tired ? ----_______I am writing a report for the newspaper.
#56333
A
When
B
Because
C
Until
D
Although
grandfather worked very hard, he couldn’t support the big family.
#58131
A
Though, but
B
/, and
C
Though, and
D
Though, /
Good to see you again It's almost three years_____ we met last time
#55585
A
until
B
before
C
while
D
since