With job vacancies available all year round offering high salaries, Vietnam has been ranked the second best place in the world to teach English by TEFL Exchange, a community for teachers of English (31)______ a foreign language.

A. like

C

Kiến thức: Từ vựng, đọc hiểu

Giải thích:

like (adv): giống, giống như      similar (a): giống nhau   

as: như là, như       for (prep): cho, vì