It’s true _______ your aunt's gone back to teaching, isn’t it?
A. that
B. when
C. which
D. where
KEY A
Giải thích: cấu trúc It + be + adj + that + mệnh đề.
Dịch: Đúng là dì của bạn đã đi dạy trở lại, phải không?
Hardly any of the paintings at the gallery were for sale, _____?
English has become a second language in countries like India, Nigeria or Singapore where_______ for administration, broadcasting and education.