7 This is one of the best books _____on the subject.A
7 This is one of the best books _____on the subject.A
A.that have ever been written B.which have ever been written
C.that has ever been written D.whatever have been written
8 My vacation begins next Tuesday,____ I will leave for
Florida.D
A.which B.that C.while D.when
分别是A,D