I would rather you did some reading while you are free, but you ______．

My mother ________ always wave goodbye to me while I was leaving for school.

I hoped Tina _________ to my birthday party next Thursday.

--- Did you quarrel with your wife?
--- Yes, but _________it.

--- I saw Nancy on the way home yesterday.
--- It        be her. She’s gone to America for further study.

—How much shall I pay for the food?
—You          .This is free of charge.

----What _______ the children be doing?
----They _______ be playing a game called Bingo.

It’s required that mineral resources_______ hand in hand with the local environment protection.

Look! Tom is too sleepy to work．He _______ up watching TV．

Kunming is called “Spring City”, but it _____ snow in winter.