David doesn’t give up _______ he has failed in the experiment four times.

David doesn’t give up _______ he has failed in the experiment four times.

#57463

while

though

since

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His father and mother ____ teachers.

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are all

are both

both are

all are

Check again,           you’ll make fewer mistakes.

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and

but

though

David doesn’t give up _______ he has failed in the experiment four times.

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while

though

since

After school he didn't go home. ______, he went to the playground.

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But

While

Instead

Instead of

Take the exam carefully, _____ you won’t get full marks.

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but

and

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