1:

My sister often walks to the supermarket

=>My sister often goes to the supermarket by foot

2:

Does your class have fifty students?

=>Are there fifty students in your class?

3:

Mrs Hoa goes to work at six forty-five

=>Mrs Hoa goes to work at a quater six 

câu 4 ko rõ nên mik ko lm

chúc bn học tốt!

1. My sister often goes to the supermarket on foot. 

on foot=walk: bằng chân=đi bộ

2. Are there fifty students in your class? 

3. Mr Hoa goes to school at a quarter to seven. 

a quarter to seven= six forty-five: bảy giờ kém mười lăm=sáu giờ 45

4. He is taking a bath at the moment. 

take a bath: tắm