Viết lại câu

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V. VIẾT LẠI CÂU:
1. I tarted learning English in 2000.
I
2. My sister began to teach English 20 years ago.
My
3. It began raining half an hour ago.
It.
4. They started to build this hotel a year ago.
They
5. He begin to have his breakfast at 7 o'clock.
He ......
6. Mr. Ba start talking to our teacher an hour ago.
Mr. Ba......
7. We started working here 2 years ago.
gone