The boy lost his key, so he has no choice but till his mother came home.
The split between humans and apes is believed by scientists______15 to 20 million years ago.
In China, the number of cities is increasing _____development is recognized across the world.
You have been working for hours. It’s no______ you are exhausted. Why not take a rest?
Smith asked you to repeatphone numbersecond time so that he could set it down.
—Did you have a good time in Thailand last week? —________,it was too hot.