Look! One of the boys ______ under the tree.
| A．are siting | B．are sitting | C．is siting | D．is sitting |
We must protect (保护) animals like elephants, because they’re _____.
| A．on time | B．in danger |
| C．on vacation | D．from China |
There are _____ teachers in our school.
| A．three hundreds of | B．three hundred of |
| C．three hundred | D．three hundreds |
When we go to the library, we must be _____ in the library.
| A．noisy | B．important | C．shy | D．quiet |
What is time? Time is the seconds, _____, hours, days, years shown(显示) in our watches and calendars.
| A．minutes | B．animals |
| C．villages | D．rules |
—Can Mary _____ English?
—Yes, and she can sing many English songs.
| A．say | B．speak | C．talk | D．tell |