Viết lại câu sao cho nghĩa ko đổi : 1.It's a long time since we spoke to your sister => we ................ 2"Why don't you leave now. That's what I'd do " => If ................. 3. Jill was the only péon who came late => Everyone ................ 4. This matter is so complicated that we don't know how to deal with it => So ................ 5. It's a pity you didn't ask us to spend the time with you => If only .................. HELP ME