Jack doesn’t smoke now, but he ______ for almost twenty years.
#101774
A
smoked
B
was smoking
C
has smoked
D
had smoked
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His sister left home in 1998, and _________ since then.
#100164
A
hadnotbeenheard
B
hasnotbeenheardof
C
hadnotheardof
D
hasnotheardof
I to go for a walk,but someone called and I couldn’t get away.
#102480
A
was planning
B
planned
C
had planned
D
would plan
—How many times have you been to China?—In fact, it is the first time that I__________ here.
#100361
A
was
B
have been
C
had been
D
am
We are now in the age of great changes. Everything sometimes ________ before it is felt.
#99951
A
change
B
had changed
C
has changed
D
changed
In order to find the missing boy, the young couple all they can over the past twenty-four hours.
#101189
A
do
B
did
C
have been doing
D
had done