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【单选题】

To keep healthy, Mr.Smith_______ cycling as a regular form of exercise after he retired.
To keep healthy, Mr. Smith_______ cycling as a regular form of exercise after he retired.

A.
took up
B.
put up
C.
gave up
D.
made up
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举一反三

【单选题】She pretended _______ me when I passed by.

A.
having not seen
B.
not seeing
C.
to not see
D.
not to see

【单选题】The supermarketnext month will be the biggest one in the city.

A.
completed
B.
being completed
C.
to be completed
D.
having been completed