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LAST NIGHT I WAS WATCHING TV ……… THE BELL RANG.A....
LAST NIGHT I WAS WATCHING TV ……… THE BELL RANG.A. WHILE B. THEN C....
100 CAU TRAC NGHIEM FOR 9 P
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50. Last night I was watching TV ……… the bell rang.
A. while
B. then
C. and
D. when
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50.
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100 CAU TRAC NGHIEM FOR 9 P