Ninety ____ teachers and students plant _____ trees every year.
| A．thousands, million of |
| B．thousand, millions of |
| C．thousands of, millions of |
| D．thousand, million |
—Do you know who the pen_______? —Sorry ,I don’t know.
| A．belong | B．belong to | C．belongs to | D．belongs |
They preferred ________ in bed rather than ________ horses.
| A．to lie, to ride | B．lying, riding | C．to lie, ride | D．lying, ride |
—Could you pass me _____glass on the table please?—Sure, but it’s _____empty one.
| A．the, an | B．the ,the | C．the , a | D．a, an |
— How do you study for a test? — I study _____working with a group.
| A．for | B．with | C．on | D．by |
—Would you like to drink some juice?
--Thanks. But________. I have drunk a lot of tea.
| A．I’d love to | B．I think so | C．I’m afraid not | D．I don’t think so |