A. How often B. How many C. How long
A B. An C. The
A. Mary’s mother’s B. Mary mother’s C. Mary mother
A. Mr. Green’s B. the Mr. Green’s C. Greens’
A. Lucy’s and Lily’s parent B. Lucy and Lily’s parents C. Lucy’s and Lily’s parents
A. hers B. theirs C.their
A. photo B. exercise C. rest
A What B. Who C. Who’s
A. Kate B. Kate’s C. Kates’
A. an/the B. an/不填 C.不填/不填