QUES: unacceptable
ANS: The senators certain that the president is telling a lie.

QUES: unacceptable
ANS: Which problem the sooner that you solve, will the more easily you satisfy the folks up at corporate headquarters?

QUES: unacceptable
ANS: There sang a man with a pipe.

QUES: acceptable
ANS:
There seem to be a good feeling developing among the students.