1 . A man dressed in a black coat was observed ________ (enter) the house and later the owner found all the valuable things stolen. （所给词的适当形式填空）

2 . We did all we could ________ (激励)his creative thinking. (根据汉语提示单词拼写)

3 . The day came at last when Pinocchio’s master was able to_______________(宣布) a special performance. (根据汉语提示单词拼写)

4 . The scientists have now set up a special group to _______________(交换；交流) information about the study. （根据汉语提示单词拼写）

5 . He found it hard to c_____________ (集中精力) on his homework with his parents quarreling loudly. （根据中英文提示拼写单词）

6 . The only practicable alternative is to ________ (延迟) the meeting. (根据汉语提示单词拼写)

7 . All our dream will come true if we have the courage to ________(追求) them. (根据汉语提示单词拼写)

8 . Most bridges had fallen or were not safe ______ (cross). (用所给词的适当形式填空)

9 . Thank you for writing and allowing me to ________ (澄清) the present situation.(根据汉语提示单词拼写)

10 . The boy begged his mom to ____________ (原谅) him for having told a lie. (根据汉语提示单词拼写)