---Mom, when shall we go to Weifang Museum this weekend?---Oh, sorry. I’m going to Beijing for a meeting. ____ Saturday ____ Sunday is OK.
—Oh, my roommate always made a mess of our living room.— . He promised to clean everything off late.
—Tom graduated and got his degree in Business management. — .
— Generally speaking, light ___ faster than sound. — Yes, it is a rule.
–Is Miss Green in the office?--No, she ____ to the library.
-A nice tie! A present?-Yes, it is. My aunt it to me for my last birthday.