Many people are grateful ORBIS nurse their help.A. to, forB. /, forC. at, ofD. toward, a

Many people are grateful ORBIS nurse their help.
A. to, for
B. /, for
C. at, of
D. toward, at

(答案→)A. to, forB. /, forC. at, ofD. toward, at解析：本题考查的是be grateful to sb/sp for sth，表示的意思为对于某人因为某事而感激，故选A

谢谢回答！！！