Đáp án:

1. Why did John go to school late?

2. When did your family redecorate the house?

3. What did Jack start doing when he was 15 years old?

4. How many children did you provide evening classes for last summer?

5. Who did donate hundreds of books to children in a rural village last June?

6. When did Trung finish writing his report?

7. What did he contribute to 2 years ago?

8. What did we build some shelters for in the past?

9. How much donation did your local charity receive from a local businessman two weeks ago?

10. What did she make last weekend?

Giải thích các bước giải:

10 câu đều dùng thì quá khứ nên khi viết lại bằng câu hỏi, ta dùng từ did ở mỗi câu