there ____many chinese to London to enjoy the Olympic Games

there ____many chinese to London to enjoy the Olympic Games this summer.
A Will have,B will be,C is going to ,D is gonging to have 答案为什么选B
还有一道 --DO you remember the days___we spent together?
----Of course ,I`ll never forget the days _____I spent the happy holiday with you
A which,that Bwhen,that Cthat,when Dwhat that 答案为什么选C 选A不行吗?the day是宾语所以可以用which/that/ 或省略 第二个空就不解了