To everyone's surprise, the 5-year-old boy_______ play the piano so well.
| A．can | B．may |
| C．has to | D．must |
He fell off the bike ________.
| A．while he rode | B．while he was riding |
| C．while he is riding | D．while on bike |
When did your father ____ your mother?
| A．marry | B．marry to | C．marry with | D．get married |
How long may I ________this book? For about a week.
| A．borrow | B．borrowed | C．keep | D．kept |
Tom was ______ only because he made a mistake.
| A．laugh | B．laughed | C．be laughed | D．laughed at |
This game ____ well. Get it now before it _____ out.
| A．is sold; is sold | B．sells; is sold |
| C．sold; sells | D．sells; sells |