12.--I ____ becoming an astronaut (宇航员) when I was at school. -- Really? Do you still think it will ____ ?
Many houses were completely destroyed in the earthquake. ______, the victims had to live in the shelters provided by the government.
Our teacher punished Tom for his being late for school last month. ______, Tom gets up early every day and is never late again.
—I’m sorry,sir. I didn’t mean to hurt you by showing you those pictures? —________It just reminded me of my old friends.
He began to take English _______ only when he left school.
Will you___________ and take this letter to the post office?