—When should I hand in my paper?
— Your paper must as soon as the bell .
A．hand in; rings B．hand in; will ring
C．be handed in; will ring D．be handed in: rings
Mary isn't here at the moment. She ______ later.
A．comes B．came
C．has come D．is coming
It is true that knowledge_____ rather than being taught.
A．learns B．learned
C．is learned D．was learned
In many places in China, the old over 90 not only by their family but also by the government.
A．is taking good care B．are taken good care of
C．is taking good care of D．are taken good care
Today a lot of information can _____ online.
A．receive B．be received
C．is received D．receiving
In the past the children were made ______15 hours a day.
A．to lock B．work
C．to work D．lock
