---Havetheytakenmeasurestobroadenanddeepentheriver?---N...

問題詳情：

---Have they taken measures to broaden and deepen the river?

---No, they haven’t. They don’t seem to be ______ of the danger of it.

A. aware              B. cautious        C. ashamed            D. careful

【回答】

A

知識點：形容詞

題型：選擇題