单项选择题
Please do not hesitate to call me if I can be of further assistance.（）
A．contact B．see C．help D．touch
She seemed to have detected some anger in his voice.（）A...
She seemed to have detected some anger in his voice.（）
A．noticed B．heard C．realized D．got
I am not certain whether he will come.（）A．determinedB．s...
I am not certain whether he will come.（）
A．determined B．sure C．sorry D．glad
