1. If we (not stop) ____ cutting down so many trees, we will endanger our oxygen supply.
2. You (ever/ live)_____________________ in a smart house?
3. This Robot is designed to be able (open) ___________ the door, and reach for objects.
4. People (know)_______________ little about the Internet twenty years ago.
5. She (not write) _____________ to you if she leaves.
6. My brother (listen) ____________________ to music now.
7. They (visit) ____________________Da Lat next week.
8. Long is thirsty. He’d like (drink) ____________________some water.
1 don't stop
2 Have you ever lived
3 to open
4 knew
5 won't write
6 is listening
7 are going to visit
8 to drink
1. don't stop
2. Have you ever lived
3. to open
4. knew
5. won't write
6. is listening
7. will visit
8. to drink
1. don't stop
2. Have you ever lived
3. to open
4. knew
5. won't write
6. is listening
7. are going to visit
8. to drink