——Did Tom come back late last night?——No. It was not yet 8 o’clock ____ he arrived home.

-- What’s the matter with you?--- _______ the window, my finger was cut unexpectedly.

—The meeting is about to start, yet the speaker hasn’t turned up.— No one knows ____.

The camera is _______expensive________ I can't afford it. 

The announcement ______all flight were cancelled because of bad weather greatly distressed the waiting passengers.