1 . For ten years Nyad devoted herself to _______(become) one of the world’s best long-distance swimmers. (所给词的适当形式填空）

2 . What are you ________ (base) this theory on? （所给单词适当形式填空）

3 . The moment I turned back, the homeless people _____________(beg) for food. （所给单词适当形式填空）

4 . She’s one of those guests who do nothing but ______ (complain). (所给词的适当形式填空）

5 . He learned English by ______ (listen) to the radio. (所给词的适当形式填空）

6 . They were walking so slowly that I began ______ (feel) bored. (所给词的适当形式填空）

7 . Over the years, there ______ (be) a number of different techniques to help designers approach this important point. (所给词的正确形式填空)

8 . It is reported that a new house ______ (build) at present in the disaster area. (所给词的正确形式填空)

9 . Lots of people find it hard to get up in the morning, and put the blame___the alarm clock. (用适当的单词填空)

10 . Some social app companies were______(blame) because they didn't adequately check their users' registration. (所给词的适当形式填空)