[ Grammar ]
Choose the correct alternative.
Anna _______ her homework when I called.
#
A. did
B. was doing
C. does
D. were doing
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Causative Verb › ViewNo clinical studies —- in this child disease research so far.
A. Had completed
B. Will be completed
C. Have completed
D. Have been completed
Tenses › View
I have eaten breakfast already.
A. Simple Present
B. Present Continuous
C. Present Perfect
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Present Continuous Tense › ViewThe children … in small groups.
A. Are playing
B. Is playing
Grammar › View
How do you make this machine ________________? (WORK)
A. working
B. to work
C. work