I called you at 4:50 yesterday afternoon, but no one answered.—Sorry. I_______with my friends at that time.

What useful book it is!—Yeah, it tells you how to play guitar.

Lily, is this ___ ipad? –No, it’s not mine. I think it’s Lucy’s.

He must be the captain ______ group got the first prize in the ping-pong game.

Which subject do you like better, Chinese or Maths?— . I prefer English.