新课堂同步学习与探究九年级英语上学期人教版
注：当前书本只展示部分页码答案，查看完整答案请下载作业精灵APP。练习册新课堂同步学习与探究九年级英语上学期人教版答案主要是用来给同学们做完题方便对答案用的，请勿直接抄袭。
— Excuse me, sir.Smoking
B
in the hospital.
— Oh, I'm really sorry.
A.doesn't allow
B.isn't allowed
C.aren't allowed
D.allowed
答案：B
解析：smoking和allow是被动关系，用被动语态，动名词作主语，be动词用is，选B。
2.— Have you ever heard that China is building a nationwide 5G network?
— Yes. 5G will allow us ______ movies faster than ever.
A.download
B.downloads
C.to download
D.downloading
答案：C
解析：“allow sb. to do sth.”允许某人做某事，用不定式to download，选C。
3.Class is over. The teacher allows ______ football.
A.to play
B.play
C.playing
D.played
答案：C
解析：“allow doing sth.”允许做某事，用动名词playing，选C。
1.Schools don't allow students
to wear
(wear) their own clothes.
答案：to wear
解析：“allow sb. to do sth.”的否定形式，用不定式to wear。
2.Students shouldn't
be allowed
(allow) to go out on school nights.
答案：be allowed
解析：students和allow是被动关系，shouldn't后接be allowed。
3.Magazines can't
be taken
(take) out of the library.
答案：be taken
解析：magazines和take是被动关系，can't后接be taken。
4.Should the rules ______
be changed
?
答案：be changed
解析：rules和change是被动关系，should后接be changed。
5.When can the bridge ______
be completed
?
答案：be completed
解析：bridge和complete是被动关系，can后接be completed。
