[ Present and Past Tense ]
What ___ you ___ when she broke her leg? (do)
I was writing my homework.
A. did you do
B. are you doing
C. were you doing
D. do you do

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Grammar › ViewChoose the correct auxiliary verb
I don’t think I ………be able to go
A. shall
B. should
C. can
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Mary asked the travel ………. about flights to New York.
A. instructor
B. agent
C. clerk
D. assistant