PRACTICE TEST 1- Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân

Ann was waiting for me ______ A. so I arrived B. when I arrived C. after I had arrived D. since I arrived

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Ann was waiting for me ______

so I arrived

when I arrived

after I had arrived

since I arrived

Giải thích

Chọn đáp án B