1 . —Sally, I want to know___________.
—My teachers. It’s impossible for me to get such great success without their help.

A．why do you work so hard	B．what did you improve in your schoolwork
C．who you want to thank most	D．how you make such great progress

2 . —Excuse me. Could you tell me ________?
—All right. You can take the subway.

A．where Jiangbei International Airport is

B．how can I get to Jiangbei International Airport

C．which way I can choose to go to Jiangbei International Airport

D．how I can get to Jiangbei International Airport

3 . —Could you tell me_________ ?
—I heard that there was a car accident.

A．what happens over there	B．when can I go across the road
C．what happened over there	D．when I can go across the road