You can never imagine what great difficulty I had __________ the poor boy who was trapped in the earthquake.
—Will you go to Mary's birthday party?—No, __________ invited, I can't go to it. I'll be too busy then.
The boy's the equal of the girl, __________ intelligence is concerned, but he doesn't work hard at all.
—The English exam is not difficult, is it?—__________. Even Tom __________ to the top students failed in it.
At no time __________ other countries.
We've just installed a fan to __________ cooking smells from the kitchen.