Grandmother always her children when she feels sad.A. thinks overB. thinks aboutC. thinks

Grandmother always her children when she feels sad.
A. thinks over
B. thinks about
C. thinks of
D. thinks out

A. thinks overB. thinks about(答案→)C. thinks ofD. thinks out解析：think over仔细考虑；think about考虑，思考；think of记起，想起；think out解决，发现。句意：当她伤心时，奶奶总是想起她的孩子们。故选C。

好好学习下