单项选择题

The secretary worked late into the night, ______ a long speech for the president.

A．to prepare
B．preparing
C．prepared
D．was preparing

相关考题

He is sitting ______ of the car with the driver.A．in fr...

单项选择题He is sitting ______ of the car with the driver.

A．in front
B．in the front
C．on the front
D．front

All Rights Reserved 版权所有©牛牛题库网(nntiku.com)

备案号：湘ICP备2022003000号-1