-How about a game chess?-----"How about a game chess" A．I do

-How about a game chess?-____"How about a game chess" A．I don't mind B．Why not C．I agree D．L
-How about a game chess?-_____
A．I don't mind
B．Why not
C．I agree
D．Let's fight 给答案并翻译选项,每个解释什么时候该用!
2.____coal is burned,the chemical emergy is turned into heat energy.
A Because B While C When D For
3.It is four years___I came to this school.
A before B after C since D up to
第一题我会了，直接做后面的题！