1. I had a bad cold, so I didn’t go to school yesterday. (Viết lại câu với“because”) ->because i had a bad cold,i didn't go to school yesterday
2. Lan can dance very well. She can’t play the guitar. (Nối câu với“although”) ->although Lan can dance very well,she can’t play the guitar
3. We make the air dirty because we use the car all the time. (Viết lại câu với “If”) ->if we use the car all the time,we will make the air dirty
4. most/ London/ tea/ is/ popular/ the/ drink/ in/ Oolong. (Sắp xếp từ để tạo thành câu) ->Oolong tea is the most popular drink in London
5. Our sources of energy will soon end if we don’t try to save them.(Viết lại câu với Unless) Unless we try to save sources of enerfy,they will soon end