Persons under 16 not be employed in our country．
| A．shall | B．can | C．may | D．will |
My uncle has a lot of books, _______ are about computer science and technology.
| A．most of them | B．most of that |
| C．most of which | D．and most of which |
He, along with his brothers, ______ how serious the situation is.
| A．haven’t realized | B．hasn’t realized |
| C．don’t realize | D．didn’t realize |
This is the factory ________ we visited last Monday.
| A．that | B．where | C．in which | D．the one |
______ you have finished your work, you ought to have a good rest.
| A．For | B．What if | C．Even when | D．Now that |
All of her time was devoted to_______ her homework, so she had no time to have fun.
| A．do | B．doing | C．does | D．done |