1. We try to turn on the computer , but it doesn’t _________ .
A. do B. does C. work D. works
2. Let’s stop _______ and sit down . I’m too tired .
A. to walk B. walking C. to walking D. walk to
3. Walk __ the road and turn right ____ 5th Street , and then you can see the hospital ____ the left .
A. along , into , at B. straight , into , to C. on , i nto , in D. along , into , on
