Each volunteer had to take...a task to do with a partner who was chosen...random.
uyennhu2008Each volunteer had to take.
on ..a task(tiếp nhận 1 nhiệm vụ) to do with a partner who was chosen..
at.random( ngẫu nhiên).
Xem thêm nhiều cụm phrasal verb hay ở đây nhé:
Luyện tập phrasal verbs.