V. Rewrite sentences, using the provided word keep meaning as that of the root one

1. Knowing English is very useful

It ............................................................................................................................................

2. It started to snow at 5 o'clock

It .............................................................................................................................................

3. Nam is taller than Hung

Hung ......................................................................................................................................

4. When did you go to bed last night?

What ....................................................................................................................................?

5. What time does Nam have to leave?

Do you know .......................................................................................................................?

6. To do morning exercises is good

It......................................................................................................................................