Mary’s mother _____ her to sing since she was five.
A. teaches
B. teach
C. has taught
D. taught
since she was five: từ khi cô ấy 5 tuổi =>dấu hiệu của thì hiện tại hoàn thành (tức là đến giờ vẫn còn dạy)
=>Mary’s mother has taught her to sing when she was five.
Tạm dịch: Mẹ của Mary đã dạy cô ấy hát từ khi cô ấy 5 tuổi.
Đáp án cần chọn là: C
I ______ blood twice and _____ presents to sick children in the hospital recently.
Choose a suitable word or phrase (marked A, B, C or D) to fill in each blank.
The cutting or replacement of trees downtown _____ arguments recently.
At Tet, my sister and her close friends often go to the hospitals to donate cakes, sweets and toys for the sick children there. They ______ it for many years.