Đề bài: Viết lại câu sao cho nghĩa ko đổi 1.Keeping the environment clean is very imports -It's................................................................................... 2.The films was so interesting that we watched it several times -It was................................................................................................ 3.He was delighted to receive his aunt's letter -He was delighted that 4.Old car tires are recycled to make shoes and sandals -People..................................................................................... 5.People think that computer games are harmful -It is.................................................................................. 6.It's three years since I last spoke to her -I haven't............................................................................... 7.Tam doesn't type as fast as she used o -Tam used......................................................................... 8."please turn down the radio for me", said my father -My father asked................................................................ 9."Why don't we go to Huong pagoda this weekend?" he said -He suggested.................................................................................. 10.how long is it since you used the pen? -When......................................................................................