问题
选择题
He wants to be a volunteer teacher in western China when he _______.
A．takes up
B．puts up
C．grows up
D．makes up
答案
答案：C
选C。考查动词短语辨析。take up“占据；从事”；put up“张贴；悬挂；搭建”；grow up“长大”；make up“编造”。句意：他长大了想在中国西部当一名志愿老师。故选C。