Many students didn’t realize the importance of study ______

Many students didn’t realize the importance of study _______ they left school.

#57914

when

until

after

unless

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Nobody has the right to laugh at others          he is right．

#55640

until

because

though

 Listen carefully in class,     you’ll not understand what to do.

#57742

and

but

because

_____ Mom had asked Jack to close the window  before he went out,______ he forgot to do it.

#58519

Though; /

Though; but

Till; /

Until; then

Work hard, ________ you’ll fail in the English exam this time.

#58170

and

but

Mrs. White came back late            the heavy rain yesterday afternoon.

#57323

because

because of

but

since

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