单项选择题
When the astronauts are working, sleeping bags are fastened（）
A．on the wall B．to their seats C．onto the flight deck D．anywhere they like
单项选择题 The proposal______, we'll have to make another decision about when to start the project.
单项选择题 ______to find the proper job, he decided to give up job-hunting in this city.
单项选择题 ______his surprise, the manager found nobody in the meeting room.
