—________ the population of the world?—It _________ about 6.8 billion.A. How many, is B. How much, is C. What’s, is
She looks very sad. I want to help her , but I just don’t know_________ to do.
At last our head teacher ______ who broke the window of the classroom.
My mother was cooking while I_________ the radio.
I decided to follow it to see _________.
Many parents are always ________ their kids ________ others’.