At the beginning of the twentieth century,___the population all over the world?
We have to ask them to ____talking in order that all people present could hear us clearly.
Because _____ the whole company, he sometimes has to work around the clock.
When does the next train _____?
The local government decided to ____ the two firms into a big one.
The room was ____with the simplest essentials, a bed, a chair, and a table.