When___________help, oneoftensays" Thank
问题:
When___________help, one often says" Thank you. " or "It's kind of you. " [ ]
A. offering
B. to offer
C. to be offered
D. offered
When___________help, one often says" Thank you. " or "It's kind of you. " [ ]
A. offering
B. to offer
C. to be offered
D. offered