Question

Complete the sentence with a present perfect verb. He _______________ for the Yang family many times before. A. will babysit B. is babysitter C. was babysitting D. has babysat

Answer 1

D. Has babysat

Explanation:
They’re talking in past tense so it makes the most sense.

Answer 2

D. Has babysat

Step-by-step explanation:

He has babysat for the Yang family many times before.

He is babysitter for the Yang family many times before.

He was babysitting for the Yang family many times before.

He will babysit for the Yang family many times before.

"He has babysat for the Yang family many times before." makes much more sense than the rest.