1. A. teached `->` taught. (quá khư đơn với động từ bất quy tắc)

2. doing `->` to do (Cấu trúc: It take(s) +  somebody + (time) + to + (verb): dành thời gian làm việc gì)

3. much (How much dùng để hỏi về giá)

4. less `->` fewer (days là danh từ số nhiều đếm được)

5. playing `->` is playing (cấu trúc hiện tại tiếp diễn: `S+ be +`$V_{ing}$)

6. learned `->` learn (cấu trúc câu quá khứ đơn dạng hỏi: Did + S + V(nguyên thể)?)

@ Mimzyy2509 :3 I'm Blink :3

Mìk sin hay nhất ạk333

I. Each sentence has a mistake find and correct it.

1. My sister teached English at a school in the countryside last year

→ teached →taught 

2. It takes Huy three hours doing this homework every day.

→ Doing → to do 

3. How many does it cost to send this letter to China.

Many → much

4. My father has less days off than Tim’s father.

Less → Fewer

5. Hoa playing the piano in her room at the moment.

Hoa playing → Hoa  is  playing

6. Did Nam learned how to use the sewing machine?

Learned → Learn

# Chúc bạn hok tốt!!~