⑴What happened?     

⑵Did you go hiking yesterday?     

⑶How did they go to Dalian?     

⑷Whose schoolbag is heavier?     

⑸What size are your shoes?     

⑹Are you all right?     

A. Size 7.

B. Jim fell off his bike.

C. I'm OK now.

D. By plane.

E. No, I didn't.

F. Mine.