Excuse me, where is Mr. Brown's office?—Sorry, I don't know. I_____ here for only a few days.
A. work
B. worked
C. will work
D. have worked
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I met a good friend of mine while I______ on the street.
A. walks
B. walk
C. was walking
D. am walking
— Please turn off the TV . The baby ______.—OK. I ’ ll go out for a walk.
A. was sleeping
B. sleeps
C. slept
D. is sleeping
Have you ever been to Shanghai?---Yes. I ________ there a few months ago.
A have been
B. went
C. have gone
When I returned home, I found I _____my umbrella in the office.
A. will leave
B. was leaving
C. have left
D. had left