What were you doing Zhang Fan came in? [ ]A. when B. while C. where——青夏教育精英家教网——

What were you doing ______ Zhang Fan came in?

[ ]

A. when
B. while
C. where

—You will fail the exam ______ you don't work hard.
—OK, I'll try my best.

[ ]

A. and
B. though
C. but
D. if

He was walking along the river ________ he saw a little dog struggling in the water.

[ ]

A. while
B. when
C. as
D. which

Nobody can learn English well ________ he works hard on it.

[ ]

A. if
B. when
C. unless

I'm sorry. I started eating before you got here ________ J was terribly hungry.

[ ]

A. so
B. since then
C. because
D. so that

Since I had a lot of homework to do, I didn't go to bed ________ 12 last night.

[ ]

A. until
B. when
C. while

Guys, before you buy new sports shoes, please think ________ it is really necessary!

[ ]

A. how
B. when
C. whether

You'd better look up the new word in a dictionary you don't know it.

A. if
B. that
C. though
D. whether

The room was dark, ______ I turned on the lights.

A. and
B. or
C. but
D. so

the sun was shining, it wasn't very warm.

A. Although; /
B. Because; /
C. Even; /
D. Although; but

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