Don’t worry about the kids. I think they can do it .A. by yourselvesB. by myselfC. by them

问题补充：

Don’t worry about the kids. I think they can do it .

A. by yourselves

B. by myself

C. by themselves

D. by himself

答案：

A. by yourselves

B. by myself

(答案→)C. by themselves

D. by himself

解析：I think they can do it .宾语从句的主语是they，和它一致的反身代词是themselves。句意：不要担心孩子们。我想他们能靠他们自己做这件事。所以选C。