Are Mr. and Mrs. Black at home? — No. ________ of them are at work.
It’s _______ outside. Put on your thick coat to keep you_______.
There _________ a meeting tomorrow afternoon.
Do you know ____________ the population of China is?—Yes, it has the __________ population in the world, about 1.3 billion.
I am sorry you’ve been waiting so long, but it will still be some time __________ Brain gets back from his holiday.