It’s quite cold outside, you had better _________the windows.
A. don’t open B. not to open
C. not open D. not opening
The number of the giant pandas in China is getting but the red crowned cranes are getting .
A. more and more, more and more
B. larger and larger, fewer and fewer
C. less and less, smaller and smaller
D. smaller and smaller, fewer and fewer
Look! There are many in the sky. I think it will be tomorrow.
A. cloud, cloudy B. cloudy, cloud
C. clouds, cloudy D. cloudy, cloudy
We call her XiWang. What kind of sentence structure is it?
A. S+V+O B. S+V+IO+DO C. S+V+P D. S+V+DO+OC
I think ____necessary for us _____the birds.
A. it , protect B. its, to protect
C. it’s , protecting D. it , to protect
Birds can find food _____ now than before.
A. easy B. easier C. easily D. more easily
