Ladies and gentlemen，please fasten your seat belts．The plane ．
#102007
A
takes off
B
took off
C
is taking off
D
has taken off
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---Hurry, John!---Oh, damn! Both my legs are nearly to give out. I ____for hours.
#101892
A
had walked
B
walked
C
have been walking
D
am walking
He______on the farm for twenty years and now he is a teacher.
#101445
A
has worked
B
had worked
C
worked
D
works
My uncle ______ in Beijing for over 10 years. Now he lives in his hometown in Fuzhou.
#99893
A
has worked
B
worked
C
had worked
D
works
He asked me how much ________ on the mountain bike.
#101387
A
did I pay
B
I had spent
C
did I spend
D
I had cost