completion understand material behavior

* Hướng dẫn giải

Chọn đáp án B

- completion /kəmˈpliːʃn/ (n): sự hoàn thành

E.g: He is the person who supervised the completion of the building.

- understand /ˌʌndəˈstænd/ (v): hiểu

E.g: She didn’t understand what I said.

- material /məˈtɪəriəl/ (n): vật liệu, chất liệu, tài liệu

E.g: I need some writing materials.

- behavior /bɪˈheɪvjə/ (n): hành vi, cách cư xử

E.g: Her behavior towards me is becoming aggressive.