13、He usually sleeps with the window open________ it is very cold.

A.because            B.if             C.while         D.unless

13、D

請?jiān)谶@里輸入關(guān)鍵詞:
相關(guān)習(xí)題

科目:初中英語 來源: 題型:

He usually sleeps with the window open________ it is very cold.

A.because            B.if             C.while         D.unless

查看答案和解析>>


同步練習(xí)冊答案