China ______ a lot of people moving to urban areas in the last 20 years. However, many migrants  left their families behind.
#100122
A
saw
B
sees
C
has seen
D
had seen
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The vegetables didn’t taste good. They ____ too long.
#103280
A
had cooked
B
cooked
C
had been cooked
D
were cooked
 — Ann is in hospital.— Oh, really? I ______ know. I ______ go and visit her.
#99804
A
didn't, am going to
B
don't, would
C
don't, will
D
didn't, will
She calls back whenever someone ______ her a message.
#99397
A
left
B
leaves
C
had left
D
will leave