Please send my best wishes when you go to visit your grandparents.A. theirB. theyC. themD

问题补充：

Please send my best wishes when you go to visit your grandparents.

A. their

B. they

C. them

D. theirs

答案：

A. their

B. they

(答案→)C. them

D. theirs

解析：A. 形容词性物主代词,他们的 B.人称代词主格他们 C. 人称代词宾格,他们 D.名词性物主代词,他们的.句意:当你去拜访你的祖父母时,请送给他们我们最好的祝福.此处代词为动词宾语,故应用宾格形式,故选C.