He was so busy that _____ I could say hello to him he had rushed out of the room.
You must have waited here for a long time, __________?
Although a teenager, Fred could resist ______ what to do and what not to do.
Mr. Blake __________my letter, otherwise he would have replied by now.
The version _______ to be closest to the author’s original now belongs to a national museum in Paris.
There will be more than five proposals __________ at the meeting.