当你把Li Lei介绍给别人时,你应说:A. Hello. B. Fine, thanks. C. This is Li Lei
_______ has a map. _______ map is new and big.
_______ has an apple. _______ have an apple, too.
-- Do you _______ a ball? -- Yes, I _______.
I have a friend _______ China.
This boy _______ a cat. The cat _______ white.