单项选择题
It is requested that the engineer（）the design immediately.
A．worked out B．worked out C．to work out D．work out
单项选择题 Because of the terrible weather, the mountain climbers decided to put off the plan（）the next weekend.
单项选择题 —Did you telephone the manager's office—Yes, he（）back before tomorrow noon
单项选择题 We will put off the picnic until next month（）the weather may be better.
