LiLei often goes to school on foot.
| A．go | B．walk | C．walks | D．goes |
Who knows the answer______the question?
| A．of | B．in | C．on | D．to |
I think you should tell your partner how ______ popcorn.
| A．make | B．to make a | C．to make | D．making |
---May I have ______ piece of bread with butter? I’m not full.
---Certainly. Here you are.
| A．other | B．the other |
| C．another | D．the others |
---______will you be back to the office?
---In half an hour.
| A．How often | B．How long |
| C．How far | D．How soon |
It’s impossible for us ______ robots like humans now.
| A．made | B．to make | C．make | D．making |