“a long time” là 1 khoảng thời gian nên dùng “for”
Đáp án: for
=> Have you learned English for a long time?
Tạm dịch: Có phải bạn đã học Tiếng Anh một khoảng thời gian dài?
Mary’s mother _____ her to sing since she was five
I ____ hundreds of old books and clothes for street children so far.
I ______ blood twice and _____ presents to sick children in the hospital recently.
Lan ______ English for more than a year but she can speak it very well.
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.
My hobby is carving eggshells and now I _____ nearly 100.
I and my brother _____ a white tiger already.
American _______ the tradition of volunteering and helping one another since the early days of the country.
He ______ lectures to foreign tourists about traditional food and games recently.
Linh is my close friend. We _____ each other for 5 years.
Lan ____ Banh Tet. She will try some this year.