[ Verb Tenses ]
I’m tired because I __________ all morning.
A. have worked
B. had worked
C. have been working
Select your answer:

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Modal Perfect › ViewMarcela didn’t come to class yesterday. She _________ an accident.
A. should have had
B. might have
C. must have
D. may have had
Grammar and Vocabulary › View
The opposite of lazy is:
A. hard-working
B. hard
C. bored
D. interesting
