Students should be encouraged to use________Internet as________resource.

Would you like to visit the UK ——Yes, ______.

I regret ______ you that my daughter has already regretted ______ out with you. So leave her alone and don’t bother her any more.

Maybe if I _____ science, and not literature then, I would be able to give you more help. [ ]

Are you going to the concert tonight?—I should have told you that I won’t, ______?