—Mary with her parents often ________to the zoo on Sundays. What about you?—I don’t often go there. But sometimes I go to see the animals on Saturdays.

  By the time I was nine ,I ______hundreds of English words.

--Surfing first started on the islands of Hawaii, didn't it?--Yes, but now it ______ by people all over the world.

This pair of shoes ________ hand, and it _______ very comfortable .

--Where is your teacher now, Jenny? -- My teacher ____________in the classroom.