– Excuse me, sir. But nobody _____ smoke here in the lift! -- Sorry! I didn’t see the sign.
She saved her money ___she might buy a color TV set.
The doctor must have sat up all night with his patient, __ you see, he looks tired and sleepy.
It’s quite warm __December in China.
The mountains look grey ___ the blue sky.
Xiao Li didn’t come to our party. We all fell sorry __ him.