_________ March 28, about 20 Chinese cities turned off lights of major buildings for one hour.
| A．At | B．In | C．On | D．Of |
The sick boy ____________ to hospital by the police yesterday.
| A．is taken | B．was taken | C．takes | D．took |
She ____________ as an animal trainer since 2003.
| A．has worked | B．works | C．will work | D．worked |
If I find his phone number，I ____________ you.
| A．tell | B．told | C．will tell | D．have told |
They ____________ her to the party，so she was very happy.
| A．invite | B．invited | C．will invite | D．are inviting |
—____________you swim? —Yes，but I’m not a good swimmer.
| A．Can | B．May | C．Need | D．Must |