you want to remember its usage, you’d better make a sentence with the new word. A. Unless

you want to remember its usage, you’d better make a sentence with the new word.
A. Unless
B. While
C. Now that
D. Even if

A. UnlessB. While(答案→)C. Now thatD. Even if解析：题意为：既然你想记住这个生词的用法，你就最好用它造个句子。now that既然；unless除非；while当……时候；even if即使。故本题选C。

我明天再问问老师，叫他解释下这个问题