1 . 这对老夫妇在街上走着，后面跟着他们的狗。
The old couple were walking in the street, _______________.

2 . I haven’t seen Sara since she was a little girl, and she has changed b________(超出)recognition. (根据中英文提示填空)

3 . There were lots of options ________ (include) bread and butter, chicken pie and puddings. (所给词的适当形式填空)

4 . It may seem like building castle in the air, but _________(give) the rate at _________ artificial intelligence or AI________(develop), in the future such dreams may actually come true. （所给词的适当形式填空）

6 . 北京是中国的政治文化中心。北京有3, 000多年的历史。
(一般表达)Beijing is the political and cultural center of China. Beijing has a history of more than 3, 000 years.
(高级表达) ________________ (用名词短语作同位语合并升级)

8 . They, three boys and three girls, were selected________ many applicants. (用适当的词填空)

9 . Though they are twin sisters, they have little ________ common.(用适当的词填空)

10 . It’s important ________ the doctors to find out the reason for the serious disease. (用适当的词填空)