When you have a small child in the house youleave small obje
Câu hỏi
Nhận biếtWhen you have a small child in the house, you ________ leave small objects lying around. Such objects ________ be swallowed, causing serious injury or even death.
Đáp án đúng: B
Lời giải của Tự Học 365
Giải chi tiết:
- dùng "should" chỉ sự khuyên, gợi ý
- "must" chỉ sự yêu cầu, bắt buộc làm
Luyện tập
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