根据下面资料，回答题
提示：Jack碰到同学Mike，两人聊起今晚的安排。
(J=Jack；M=Mike)
J：Hi。Mike．Are you doing anything special tonight?
M： 51 ．
J：Good．I’ve got two concert tickets． 52 ?
M：Sure．I’d love to． 53 ?
J：We are going there by car．1 will give you a ride．
M：Great． 54 ?
J：We’11 meet at the school gate．How about 6 o’clock?
M：Okay．See you then．
J： 55 ．
第（51）题答案为