[单选] His doctor suggested that he________his right hand．

题目：[单选] His doctor suggested that he________his right hand．
A . avoid using
B . avoid to use
C . has avoided using
D . avoids to use

正确答案：A
解析：
Suggest后的宾语从句应用虚拟语气，即从句中的谓语动词应为should do。Should常常被省略，因此，从句中的谓语常为动词原形。排除选项C和D。avoid后跟动词的-ing形式。选项A是正确的。【句子大意】医生建议他尽量不要用右手。