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.
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.
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.