[ Grammar ]
Which of the following is a modal auxiliary verb?
A. am
B. have
C. can
D. go

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Vocabulary and Sentence Structure › ViewRemember to rinse out takeaway food containers properly before you put them in the recycling bins.
A. wipe
B. wash off
C. put away
D. throw away
Narrative Tenses & Conditionals › View
While I ________, I suddenly felt sleepy.
A. was studying
B. had studied
C. study
D. am studying