_________ March 28, about 20 Chinese cities turned off lights of major buildings for one hour.
| A．At | B．In | C．On | D．Of |
Her mother likes to eat_______ apple or two _______between meals.
| A．a; tomatoes | B．a; tomatos |
| C．an; tomatoes | D．an; tomatos |
It is very important for us to _______and work hard.
| A．keep fit | B．keep fat |
| C．keeping fit | D．keeps fat |
_______apple _______ day keeps _______ doctor away!
| A．A; a; the | B．An; a; the |
| C．The; a; a | D．An; the; the |
Children play “trick or treat”_______ their parents ________ Halloween.
| A．with; in | B．to; on | C．for; at | D．with; on |
---- _______ does your mother watch the Talk Show?
---- Once a week.
| A．How long | B．How often |
| C．How soon | D．How far |