--- When did your father come back last night?--- He didn’t come back ______

--- When did your father come back last night?--- He didn’t come back _______ he finished all the work.

#56358

until

while

unless

推荐题目

As your best friend, I will help you all the time _______ you make progress.

#57693

when

unless

though

– Can your sister play tennis?-- Sure. She plays ____ I do.

#56884

as good as

so good as

so well as

as well as

---- Hurry up ! The bus is coming . ----- Wait a minute. Don’t cross the street_________ the traffic lights are green.

#55728

since

after

while

until

About 75% percent of the students can go swimming ____the rest can't.

#55632

while

and

Cross the road carefully, _________ you’ll keep yourself safe.

#57533

but

and