Learning to speak Chinese is a challenge, for it is often difficult for one foreigner to make himself easy________.
Wang Pin is an orphan.He has no dad ___ mum.
—May I remind you that a Mr. Wang is waiting outside, sir?—Oh, that’s right. I about it.
—Did you enjoy your holiday?—Yes, it’s the best holiday I these years.
Just look at the room. My roommate ____ up his clothes.
I ____ to send him a telegram to congratulate him on his marriage, but I ____ it.