III. Rewrite the following sentences based on the given words.
1.He is crazy about beach volleyball.
→ He is a beach volleyball fond
2.What she fancy doing is to ride a bicycle around the park in the afternoon.
→ She is keen on riding a bicycle around the park in the afternoon
3.My grandfather needs to have a surgery. His heart problem is very serious.
→ My grandfather needs to have a surgery for his serious heart problem
4.Lam has participated in many volunteer campaigns up to now.
→ Lam has taken part in many volunteer campaigns up to now
5.They started to raise funds to help disabled children in early 2009.
→ They have raised funds to help disabled children since early 2009.
⇔ Công thức chuyển đổi từ quá khứ đơn ⇒ hiện tại hoàn thành.
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