问题
选择题
—_______ should we clean the library?
—Twice a week.
A．How many
B．How much
C．How long
D．How often
答案
答案：D
本题回答语表示的是频率，对此提问用how often，故本题选D。
搜题请搜索小程序“爱下问搜题”
—_______ should we clean the library?
—Twice a week.
A．How many
B．How much
C．How long
D．How often
答案：D
本题回答语表示的是频率，对此提问用how often，故本题选D。