---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
---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
A