问题补充：
The old father the project ten years ago but didn’t live long enough to complete it so
his sons and daughters and are continuing doing it now.
A. came up; picked it up
B. put up; kept it up
C. took up; took it up
D. set up; brought it up
答案：
A. came up; picked it up
B. put up; kept it up
(答案→)C. took up; took it up
D. set up; brought it up
解析：come up发生 put up举起提出 take up 从事 set up建立,当人称代词做直接宾语时,一般要放在动词后面,根据题意选C,这个老父亲十年前开始从事这个工程,但是他没能活到这个工程完成.因此它的儿子女儿现在从事了这个工程继续他的事业.
