Câu ví dụ #11
1. Although the shallow Diem Dien stream is small with a weak flow, it took the couple 10 years of ferrying soil and planting trees to form the 400-square-meter island.
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2. During the latest Covid-19 outbreak between May and September last year, HCMC's grassroots health system proved to have many weak points, including a serious shortage of staff and medical equipment.
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