He is tired because he had been ____ (sing) for ...

[ Subject-Verb Agreement ]

He is tired because he had been ____ (sing) for hours.

A. Sings
B. Sang
C. Sing
D. Singing

Select your answer:

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A. off

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Select the correct order or words to fit in the sentence structure.

The nursing _______________ put the Band-________ on the wound to ___________ the nurse.

    A.     Aid, aide, aide
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