You don’t know how difficult the job is, you have done it yourself.
#55556
A
unless
B
since
C
if
D
because
推荐题目
Ed Smiths loves tennis, ________ he doesn’t play it. It’s difficult for him.
#56975
A
because
B
but
C
and
D
for
―Hurry up. The bus is coming,―Wait a moment. Don’t cross the street the traffic lights are green.
#56739
A
after
B
until
C
while
D
since
—_______he is very old, he works very hard. — Wow, great. I should learn from him.
#56197
A
Although
B
However
C
Because
D
So