You can complain, but I doubt _____ it’ll make any difference.
She didn't come to the party last Sunday. ________, she must have made the party more exciting.
Students ________ remain in their seats until all the papers have been collected.
—Did Ann fail in English? —She ________. Don't you notice that she looks depressed?
I wrote a letter to John for his help during my high school years,without which I ________ the college entrance exam.
________ me what you wanted to know, I should not have wasted my time talking so much with you.