单项选择题
This dictionary will prove（）to you in your English study.
A. being of some use B. be of some use C. to be of some use D. of some use
单项选择题 The manager hoped to be（）of how our business was going on.
单项选择题 No matter how frequently（）, the works of Beethoven always attract large audiences.
单项选择题 He is mentioned in the chapter and also in（）that proceeds.
