They ________ close friends at university.
A. created
B. became
C. promoted
D. formed
Đáp án: B
Giải thích: Họ đã trở thành bạn thân ở trường đại học.
The aim of the culture festival is _______ friendship between the two countries
The children seem to be totally capable ________ working by themselves.
I've got lots of _______, but only a few are really good friends