[ Perfect Progressive Tenses ]
She ______ (not/wait) for the bus when it started raining.
A. was not waiting
B. had not been waiting
C. has not been waiting

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Grammar › ViewI work _____ Monday to Friday.
A. until
B. on
C. from
D. ago
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_______ you a doctor when you ________ in London?
A. Were; lived
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A. would like
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The orangutan scratches __ on the back.
A. itself
B. himself
C. themselves
D. herself
