-Where’s the old blue bag?
- I’m not sure, but it ______ be thrown away. It be somewhere in the house. I saw it yesterday.
| A．must ;must | B．must; can |
| C．can’t; must | D．can’t; can |
The mobile phone has influenced people’s life a lot since it________.
| A．invents | B．invented |
| C．is inventing | D．was invented |
The Greens arrived ______ New York ______ a Sunny Day.
A. in; in B. at; in C. in; on
Teenagers like to _______ photos of famous stars in their bedrooms.
| A．put in | B．put up | C．put away | D．put out |
There __________ a library and two reading rooms in the school.
| A．are | B．is | C．be | D．to be |