She is ____________(讨价还价) with the salesgirl over the price.
答案：bargaining
The box ____________(包含) many books is very heavy.
答案：containing
I become ____________(热心的) about classical music，but in the past I was interested in pop music.
答案：enthusiastic
I feel ____________(惭愧的) of you for your dishonesty.
答案：ashamed
He is an ____________(好斗的) boy and often fights against other boys.
答案：aggressive
