为规范商品房预售行为，加强商品房预售管理，保障购房人的合法权益，《城市房地产管理法》明确了商品房预售实行( )制度。

A．预售资格认定

B．商品房买卖许可证

C．预售许可证

D．商品房预售许可证

用括号内所给词的适当形式填空。

1. ______ (I) baseball is here. Do you want to play baseball with me?

2. I have two ______ (dictionary), a Chinese dictionary and an English dictionary.

3. This is the ______ (one) day of the new term (学期).

4. ______ (be) you Mr. Black?

5. I have two ______ (watch). One is pink. The other is black.