15. The police are asking the man _______ car has been stolen.
A.whom B.whose C.which D.that
16. Spring is the time _______ many kinds of flowers blossom.
A.who B.where C.which D.when
17. English is the subject _______ she is good at.
A.what B.which C.where D.who
18. He went to the sport club _______ he first met his wife.
A.which B.who C.where D.whose