---Will you join us playing basketball after school?---_____,but I promise to go swimming with .
A.My pleasure.B.Many thanks.C.Take it easy.D.Never mind.
我认为答案应该为B.因为是回答别人的邀请。而A答案一般是用来回答别人的感谢时的用语，相当于It's my pleasure.or It's a pleasure.既然是婉拒，首先就要表示感谢 .这就是英语