—Look! A book is on the floor. Whose is it?

—It ______be Rick's. It has his name on it.

A. mustn't        B. can't           C. must D. need

“Whose bike is it ?” “It’s ____________”

  — Do you know        ?

— Sorry, I don't have a watch.

A.   whose watch this is                          B.   whose watch is this

C.   what time it is                               D.   what time is it

Please pass me the cartoon book _________ has a Mickey Mouse on the cover.

          trousers            ?

A. Whose; these are   B. Whose; is this  C. Whose; is it   D. Whose; are those