I. Give the correct from or tenses of the verbs in brackets:
1, I think most people( travel ).....................on flying trains in the future.
2, My Mom used to( walk )....................to school when she was small.
3, A: Where are your children? ----- B: They are upstairs. They( practice )...................how to play the piano in their room now.
4, Lan and Huong( write )......................postcards to their friends now.
5, In the future, chilren( go ).............to school by pilotless helicpter.
6, I used to( drink )..............more milk than my brother did.
1. will travel
2. walk
3. are pracing
4. are writing
5. will go
6. drink