The company had about 20 notebook computers but only one-third used regularly. Now we have 60 working all day long.
A．is B．are
C．was D．were
This machine . It hasn’t worked for years.
A．didn’t work B．wasn’t working
C．doesn’t work D．isn’t working
When different cultures, we often pay attention only to the differences without noticing the many similarities.
A．compared B．being compared
C．comparing D．having compared
is our belief that improvements in health care will lead to a stronger, more prosperous economy.
A．As B．That
C．This D．It
Don’t worry if you can’t come to party — I’ll save cake for you.
A．the; some B．a; much
C．the; any D．a; little
We won’t keep winning games we keep playing well.
A．because B．unless
C．when D．while
