The police ____ still not sure ______ the young man killed himself or was killed.

The police ____ still not sure ______ the young man killed himself or was killed.

#56977

is, if

is, whether

are , whether

are, that

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She is very heavy, ______ she never stops eating.

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but

when

Keep off the drugs（毒品）,         you and your family will be in great danger?

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and

but

          you practice your English every day, you won’t make any progress on it.

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Although

Unless

Since

-Why are you so busy?-____________I have ____________ work to do.

#55299

Because; too many

So; too much

So; too many

Because; too much

–Why were you late for school this morning?–I got up very early this morning, ________ I didn’t catch the first bus.

#55176

and

but