If we don't start out now， we must risk ______(miss) the train.

　　missing

　　形容詞副詞：

　　The more time you waste， the _____(easy) it is to continue wasting time.easier

　　As Jane was the _____(old), she looked after the other children in the family. eldest

　　詞性轉換：

　　The explorers were puzzled over what to do next because they were in a _____(trick)situation .

　　trick是名詞或動詞，應把它變為形容詞tricky

　　These electric appliances are all similar in construction but each one is _____(specialize) in its function.

　　specialize 是動詞，應把它變為形容詞 specific或 special