1.Mr. Johnson …. (find) 10$ in the park yesterday. 2. Columbus …… (discover) America. 3. We …… (watch) TV last night. 4. Marry …… (send) an e-mail to her friend an hour ago. 5. J. Rowling ……. (write) 8 books about Harry Potter and his friends.
1) found 2) had discovered 3) watched 4) sent 5) has written