The Collectors

Phillips ______ in this orphanage since he went to...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Phillips ______ in this orphanage since he went to university.
A. has volunteered
B. had volunteered
C. was volunteering
D. would volunteer
Giải thích:
Hòa hợp thì:
HTHT + since - QKĐ
Tạm dịch: Phillips đã làm tình nguyện ở cô nhi viện này kể từ khi học đại học.
Đáp án A.
 

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