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- I can’t remember how many years ago _____ a fight broke out between the husband and the wife.
- I don’t think I’ ll be able to go mountain climbing tomorrow________?
- I have no ideahis proposal was turned down by the committee. —Me, either.
- I really don’t know_______about it.
- I’ve already told you that I’m going to but it, _____.
- Last summer I took a course on _______ poisonous gases.
- Last summer I took a course on______.
- No matter how bright a talker you are, there are times when it’s better ______ silent.
- No one was sure exactly__________ he wanted
- Nobody knew _______ a living in that country.