In the USA, people on bikes must ____ a helmet.
A. on B. put on C. wear
选出下列单词的正确汉语意思。
( ) （1）best A. 好B.最好
( ) （2）ground A.地面B.围绕
( ) （3）sound A.声音B.发现
( ) （4）nobody A.没有人B.一些人
( ) （5）ownA.自己的B.一
( ) （5）July1st is the birthday of the Communist Party ___China.
A. forB. ofC. in
( )（4）Party members celebrate the day when it ____ founded.
A. isB. wasC. were
( )（3）_____ August , school is out.
A. onB. inC. at
( ) （2）August is the _____ month of the year.
A. eighthB.seventhC. sixth