He met many problems------ he was going over his lessons.

He met many problems------ he was going over his lessons.

#57608

before

as soon as

since

while

推荐题目

 He didn’t tell me the truth _____ I met him in the street.

#58409

since

when

until

after

 Yunnan is       colorful     millions of people come to enjoy themselves every year.

#56941

too…to

so…that

not…until

so…but

I decided to write rather than________.

#57562

telephoning

telephoned

telephone

telephones

I met a friend of mine       I was walking in the park.

#56579

before

when

because

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David, get up early, ________ you’ll catch the early bus.

#56425

but

and

after

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