7.It was Darwin's fortune that allowed him to do his research without worrying about ______ he would have bread and cheese.( )
A. | if | B. | what | C. | that | D. | whether |
1.He was never ______ how much money he earned every day.( )
A. | realized | B. | aware for | C. | aware | D. | aware of |
20.London was a new world to me and I was find out more about it.( )
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A. | leading to | B. | dying to | C. | connected with | D. | curious about |