The level of the river ___ 20 centimeters over the security line and ____must be taken to control the flood.
Is it a wonder that _____ little cells can store _____ much energy?
Not having worked out the problem, _____ leave the office.
----Why isn’t Cathy here yet? --- She _________ to be picked up at the station.
“ _____ to Michelle and having two beautiful girls in my house never allows me to look down upon women,” said Obama.
People tend to think that children’s IQ is _____ determines how well they are going to do in their future life.