Over 80% of the population of china___peasants.
A was B is C would be D are
This is one of the most interesting questions that___asked.
A have B has C have been D has been
Many a man___come to help us.
A have B has C is D are
"All __present and all__going on well," our monitor said.
A is,is B are,are C are,is D is,are