單項選擇。Remembertoreturnthebooktothelibrarywhenyoufinish

問題詳情：

單項選擇。

Remember to return the book to the library when you finish ________ it.

A. read  B. to read   C. reading  D. reads

【回答】

C

知識點：動詞和動詞短語

題型：選擇題