______ trees are cut down in the forests every year.
| A．Thousand | B．Thousands |
| C．Thousands of | D．Thousand of |
—_____ do you go to the zoo with your brother?
—Three times a month.
| A．How long | B．How often | C．How old | D．How much |
My brother usually _____ his classroom after school. But now he _____ basketball.
| A．cleans; plays | B．is cleaning; plays |
| C．cleans; is playing | D．is cleaning; is playing |
—What _____ Yu Ping usually _____ in her free time?
—She usually goes to the library.
| A．do; do | B．is; doing | C．does; does | D．does; do |
Mrs. White _____ her wallet now, but she can’t ______ it.
| A．is looking for; find | B．finds; look for |
| C．is looking for; finds | D．looks for; finding |
—Excuse me, Maria. Can I use your bike?
—Sure. Here you are. But you must return it _____ time.
| A．in | B．at | C．on | D．to |