书名：怪物讲师 新多益五回
版本：初版12刷
题目：第二回第107题
You may leave work early today ______ you report early tomorrow.
(a)until
(b)not only
(c)since
(d)only if
答案是C，但是我问了几个人都和我一样选D
你今天可能早点离开，只要你明天早点报到 ==>我自己的想法是这样
题目：第二回134题
You will be sent a letter confirming ______ of all application
materials once they are filed.
(a)admission
(b)receipt
(c)ownership
(d)membership
答案是B，问了几个也选A，求大神解释
先谢谢大家了