I was taking a nap when someone_______ the door.
A. knocked
B. knocks
C. knocking
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What_______ you_______ when Mom cooked last night?
A. was; doing
B. were; doing
C. are; doing
She_______ looking when we crossed the road.
A. weren't
B. wasn't
C. didn't
I was_______ in class at 3:00 p.m. yeasterday.
A. to study
B. study
C. studying
1.What is this passage advertising?
An opportunity for Chinese colege graduates to teach in the US.
B. An opportunity for American colege graduates to teach in China..
C.An opportunity for Chinese college graduates to study in the US.
D. An opportunity for American college graduates to study in China
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