His father has worked in this factory________ he came here in 1985.A. for B. since C.when
—Would you like to stay ____ days in Beijing?—No, thanks. I’m afraid I’ll be back tomorrow.
—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.