Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.Bob has been working as a waiter since he ________ from high school. A. g

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Bob has been working as a waiter since he ________ from high school.

graduates

graduated

had graduated

would graduate

Giải thích

Hòa hợp thì:

HTHT/HTHTTD + since + QKĐ.

Tạm dịch: Bon đã làm bồi bàn kể từ khi cậu tốt nghiệp trung học.

→ Chọn đáp án B