Li Na, the Chinese top tennis player was born _________ February 26, 1982.A. on B. at C. in
---Thank you very much for your nice present. --- ____________.
---I will go to Beijing for a visit with my family during the winter holiday. ---______.
---What if I have to go there and know nothing about it? --- If I______ you, I would try to find some information about it on the Internet.
These young trees must ______.
Many Chinese students found______ difficult to learn English grammar.