1 . Daniel, ______ you have met somewhere, dropped in on me last Friday.

2 . 以往，漓江的水质因游客量的增长遭到了严重破坏，很多游客经常将垃圾扔入江中。
Previously, water quality in the Li River suffered greatly from an increasing volume of tourists, ______________.

3 . My brother, ________ his friends all highly praise, is humorous and creative. (用适当的词填空)

4 . One of the natives came up to us, _______ we gave some bells and glasses to. (用适当的词填空)

6 . Mary took a few friends to my birthday party, none of ________ I was familiar with. (用适当的词填空)

7 . I have two sisters. Both of them are doctors. （用定语从句合并句子）
_______________________________________________________________________________________________

8 . I came across my primary school teacher this morning, with________ I have lost touch for almost 20 years. （用适当的词填空）

9 . He was eager to go to the hospital to see his stepmother, ________he loved and respected as his own mother. （用适当的词填空）

10 . One day, I was cooking in the kitchen when the telephone rang. I went to answer it immediately. It was my close friend Lisa, ________ I hadn’t seen for many years. (用适当的词填空)