I ______to surf the Internet for some useful information. So I can learn a lot from it.A am not allowedB.am allowedC.am refused
—Mr. Wang, I have trouble ____ the text. —Remember ____ it three times at least.
One of my teachers ____ an Englishman.
It is not polite ____ in public places.
The girl saw a snake ____ on the road and was frightened.
—Is there ____ in your exercise book today? —No, Mom. I did it very carefully.