hoàn chỉnh câu sao cho nghĩa không đổi 1. We began to study English 4 years ago . → We have .................................. 2. Mary always went swimming after school last year . → Mary used to ............................. 3. My house is nice but yours is nicer ( as ............. as ) → My house isn't ................................ 4. She started learning to swim five years ago . → She has............................... 5. Quang and Nam bought new fishing rods yesterday . → They are going to ...............................