1 . He does not identify happiness with money. That is the reason.(将两个句子合并为一个包含有定语从句的主从句)

2 . In another letter, Father Christmas_________ _________   (抱怨) how he could not stop his helpers playing games with the toys instead of wrapping them up. (根据汉语提示完成句子)

3 . I came a thousand miles to stand in this door tonight， and it is worth it if my old partner________ ________.（出现，露面）（根据汉语提示完成句子）

4 . 我以为他已经把这个决定告诉你了。
I thought he __________you about the decision.

5 . The senior engineer is a man of wisdom, who is in charge of directing the building of the subway. (同义词替换划线词)
The ________ engineer is a man of wisdom, who is in charge of directing the building of the subway.

6 . 人们发现很多濒危动物被日夜保护着。(watch over)
People found many endangered animals ________ day and night.

7 . 他从田间回来后就一直在流汗。
He __________ since he returned from the fields.

8 . Whether the economy will b______ ______ it in the long run isn’t clear.
从长远看，经济是否会从中受益还不清楚。

9 . He __________an important document when the boss entered.
老板进来时他假装正在看一份重要的文件。

10 . 我正打算告诉你这件事，这时你打电话来了。
I __________ you about this when you gave me a ring.