--- When did your father come back last night?--- He didn’t come back ______

--- When did your father come back last night?--- He didn’t come back _______ he finished all the work.

#56358

until

while

unless

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I didn’t believe he could drive         he told me.

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---- Hurry up ! The bus is coming . ----- Wait a minute. Don’t cross the street_________ the traffic lights are green.

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