The number of students in our school _________ 4000 and a number of them _______ good at playing pingpong. A. is, is B are, are C. is, are D. are, is
They don’t know what ___________ the problem .
Don’t try to do everything at once. Take it a bit _______________.
We __________ obey the traffic rules.
What a ________ rain ! It has rained ______ since last night.
—Andy finished first in the competition! --- Really ? Sounds ________ to believe.