317] If
city noise _______ from increasing, people _______ shout to be heard even at
the dinner table 20 years from now.
[译文] 如果不制止噪音继续污染,从现在起20年后人们就不得不在吃饭的时候大声喊叫才能听得见。
A. are not kept; will have to
B. are not kept; have to
C. do not kept; will have to
D. do not kept; have to
[答案及简析]
A。
keep sth. from doing sth.的被动形式;have
to可以用于任何人称。