Bộ 20 đề thi Tiếng Anh vào 10 có đáp án cực hay (Đề 2)

It is believed that she'll be a billionaire by the time she forty. A. is B. was

14/40

It is believed that she'll be a billionaire by the time she_______ forty.

is

was

will be

would be

Giải thích

Đáp án A