_________ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected.
In order not to be disturbed, I spent three days ___ up in my study.
We are only___ glad to do anything we can ___ her.
—Now that you like the personal computer very much, isn’t it a good idea to get one? —Well, I’d like to but I can’t afford ___ computer at present.
–Mum, I failed again in today’s examination. --Oh, ________. The world is not _______.
_____surprised me most was _____such a little boy of seven could play the violin so well.