问题
单项选择题
One reason for the successes of Asian immigrants in the U.S. is that they have taken great() to educate their children.
A. efforts
B. pains
C. attempts
D. endeavours
答案
参考答案：B
解析：
pains努力，辛苦，可与take搭配，have taken great pains意思是“煞费苦心”。A．efforts努力；C．attempts试图，尝试；D．endeavours努力，与efforts同义。A、C、D项都不与动词take搭配。