There are ________ people in the supermarket. It's so crowded.
| A．hundred | B．hundreds | C．hundred of | D．hundreds of |
I bet you’ll look cool and feel cool ________
| A．with something in | B．with nothing on | C．in something with | D．with nothing in |
Leaves fall _______piles ________the ground
| A．into; upon | B．upon; into | C．onto; off | D．into; onto |
They think wolves are dangerous _________humans so this leads _______the danger of wolves.
| A．for; to | B．as; for | C．to; to | D．at; in |
Wolves often work __________a team and they never kill for __________.
| A．as; funny | B．for; fun | C．as; fun | D．for; funny |
We should tell hunters _______tigers.
| A．don’t kill | B．not kill | C．killing | D．not to kill |