… during the time (2) _____ they enjoy the SEA Games 22 in Ho ChiMinh City then donate the bicycles to poor children.

2/10

… during the time (2) _____ they enjoy the SEA Games 22 in Ho Chi Minh City then donate the bicycles to poor children.

where

which

that

when

Giải thích

... during the time when they enjoy the SEA Games 22 in Ho Chi Minh City then donate the bicycles to poor children.Tạm dịch: trong thời gian vui chơi tại SEA Games 22 tại TP.HCM sau đó tặng xe đạp cho trẻ em nghèo.