—What were you doing when the UFO arrived?— I with my dog on the street.

—What were you doing when the UFO arrived?— I         with my dog on the street.

#41593

walked

was walking

is walking

have walked

推荐题目

 My mother ______when I got home.

#37801

cook

cooking

was cooking

cooks

—Heavy smog (雾霾 )in eastern and central China seems to get more and more serious.—I agree. Something          to deal with it.

#38339

has done

is doing

must be done

must do

----Where did you go last week ?   ----I ______to the park.

#42190

went

will go

did go

It’s ten o’clock. Betty _______ piano.

#42454

is playing

plays

is playing the

plays the

—What a clean and bright classroom, isn’t it?—Yes, it’s always clean and bright because it       every day.

#39281

cleans

cleaned

is cleaned

was cleaned

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