I don’t know _____ next.
| A．how to do | B．what to do | C．what can I do | D．how I can do |
It willabout half an hour to get to the zoo by bus.
| A．spend | B．take | C．pay | D．cost |
Tom, together with his parents the yard when I saw him.
| A．is cleaning | B．was cleaning |
| C．are cleaning | D．were cleaning |
---What are you going to do this afternoon?
---I’m not sure. I go swimming with my friend.
| A．may | B．can |
| C．may be | D．must |
Hi, Kate. What made youthe sad news again?
| A．think of | B．think about |
| C．think over | D．think out |
----- Is the environment good around your city ?
----- Yes. Many trees here every year.
| A．are planted | B．plant |
| C．planted | D．be planted |