Choose the alternative that correctly completes the sentences below.

1. 1) She ______ be married, she isn’t old enough.
   

2. 2) Listen, children, you ______ finish the essay now if you don’t want to.
   

3. 3) The neighbors ______ be at home, I saw the light on in their bedroom.
   

4. 4) You ______ take a taxi. There’s a good bus service.
   

5. 5) Look at that sign. You ______ park here.