—_____ do you go to the school library? —Once a week.
| A．How often | B．How soon | C．How long | D．How much |
The temperature can drop ________zero when winter comes.
| A．under | B．below | C．at | D．over |
This piano is too big. Can you make ________ for it?
| A．a space | B．some spaces | C．some more rooms | D．some space |
The number of the students in our school always growing.
| A．be | B．are | C．is | D．were |
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 |