[ Grammar ]
Could and Couldn’t is the __ of Can and Can’t.
A. past tense
B. present tense
C. singular / plural
D. parents
Select your answer:

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Tenses › ViewConvert the sentence to past tense: He writes a letter to his friend.
A. He writed a letter to his friend.
B. He write a letter to his friend.
C. He writing a letter to his friend.
D. He wrote a letter to his friend.
Grammar › View
He is devoted to _________ at the local orphanage, helping to improve the lives of disadvantaged children.
A. volunteer
B. volunteering
C. to volunteer
