— Dad, must we wait for the green light?
— Yes, I’m afraid we ________. That’s the traffic rule (规则).
| A．can | B．may | C．need | D．have to |
We’re going to practice_____ English as much as possible.
| A．speak | B．to speak | C．speaking | D．speak about |
Don’t throw litter around. Please__________.
| A．pick it up | B．pick up it | C．pick up them | D．pick them up |
______ do you know about table manners in Korea?
| A．What | B．How many | C．How much | D．Which |
Our classroom _____ every day, so it’s very clean.
| A．cleans | B．is cleaning | C．is cleaned | D．cleaned |
They ______ Hong Kong twice.
| A．have gone to | B．have been to | C．have been in | D．have gone in |