We must do everything we can _________ our earth clearer and safer.
| A．made | B．to making | C．make | D．to make |
Could you tell me _________ the radio without help ?
| A．how did he mend | B．what did he mend |
| C．how he mended | D．what he mended |
I don’t know _____ next.
| A．how to do | B．what to do | C．what can I do | D．how I can do |
—Do you like the shirt?
—Yes, it ____ very soft.
| A．feels | B．felt | C．is feeling | D．is felt |
When I was young, my father told me__________.
| A．the earth went around the sun |
| B．did the earth go around the sun |
| C．the earth goes around the sun |
| D．does the earth go around the sun |
—Peter looks sporty.
—Yes. He is the ______runner in my class.
| A．slower | B．slowest | C．faster | D．fastest |