Thanks _____ your help.
| A．to | B．of | C．for | D．at |
You can see books. books are my father’s.
| A．a，The | B．some，The | C．the，Some | D．the，The |
Bill Gates is from the.
| A．UFO | B．USA | C．PRC | D．PK |
Mary writes e-mail to David. She found keys.
| A．a; him | B．an; his | C．a; her | D．an; he |
_______ goes to school with her mother.
| A．We | B．You | C．They | D．Jane |