问题
选择题
The secretary worked late into night, _____ a long speech for the president. [ ]
A. to prepare
B. preparing
C. prepared
D. was preparing
答案
答案：B
搜题请搜索小程序“爱下问搜题”
The secretary worked late into night, _____ a long speech for the president. [ ]
A. to prepare
B. preparing
C. prepared
D. was preparing
答案：B