【2012黑龙江齐齐哈尔】The math problem is so hard. I really don’t know_____. A. how to do it B. how to do C. what to do it
Near my house _____two small green trees.
Jack, they are your new shoes. You can ____.
Lin Tao is _____Chinese and Jim is _____American boy.
Don’t ____sad(伤心难过的). Let’s go and fly a kite.
–I’ll have my winter(冬天) vacation(假日) in Xiamen this year. --It’s a nice place. ____ your vacation.