5000 câu trắc nghiệm Tiếng Anh 9 có đáp án - Phần 3
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The phone________ constantly since Jack won the first prize this morning.

9/20

The phone________ constantly since Jack won the first prize this morning.

has been ringing

rang

had rung

had been ringing

Giải thích

Chọn đáp án A