【单选题】
Joan is () sister.
A、Mary and Jack
B、Mary’s and Jack’s
C、Mary’s and Jack
D、Mary and Jack’s
A、Mary and Jack
B、Mary’s and Jack’s
C、Mary’s and Jack
D、Mary and Jack’s
A、She is a typist B、She is talking to her friend C、She is having a holiday. D、She is my sister.
A、A.She is not very well. B、B.She is years old. C、C.She is very nice. D、D.She is as tall as I am.