问题
选择题
The students are going to raise some money the poor the afternoon of May 21st.
A．to; on
B．for; on
C．to; in
D．for; in
答案
答案：B
句型raise sth。 For sb
On的用法 on+具体的某一天或具体的某一天早上/中午/晚上
the afternoon of May 21st为5月21日的下午
故选B