5000 câu trắc nghiệm Tiếng Anh 9 có đáp án - Phần 90
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I think he is unwell; he was complaining_______ a headache this morning.

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I think he is unwell; he was complaining_______ a headache this morning.

of

at

from

against

Giải thích

Chọn đáp án A