Choose the best answer A, B, C or D to complete the sentence. Question 9. When he was ten, he set up a small laboratory after he _____a book his mother showed him. A: had read B: reads C: has read D: read

2 câu trả lời

When he was ten, he set up a small laboratory after he read a book his mother showed him.

Đáp án: D. read.

Dịch: Khi anh ấy mười tuổi, anh đã thiết lập một phòng thí nghiệm nhỏ sau khi anh đọc cuốn sách mà mẹ anh đã cho anh xem.

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