Dưới đây là cách điền từ vào chỗ trống trong bài tập:

1. He used to **read** under the oil lamp because there was no electricity.
2. I used to **get up** at 3 a.m and go with my parents to get fresh water.
3. My grandparents' family used to **move** to a limestone cave in the mountainous area to escape American bombers.
4. Primary children used to **put** small porcelain inkpots in the corners of their wooden tables.
5. Mrs. Binh used to **make** teaching materials in the evening.
6. Many students in Binh Phuoc Province used to **quit** school because their families were so poor.
7. High school students used to **take** the high school graduation examinations.
8. The former university entrance exams with two sessions used to **last** one week.
9. City dwellers used to **carry** rice with shoulder poles in support of the national fight against French colonization.
10. Residents on Hang Bo street used to **sell** bamboo baskets.

Hy vọng điều này giúp ích cho bạn!