Several loudspeakers are _______ from the ceiling and we can hear the speaker very clearly.
A、connectedD
暂无解析
John_______tobeapoliteman.Butinfactheisveryrude.
Wecannottrusthimanymorebecauseheoften________hisduty.
Wecannot_______allthemagazinestogether.
When making modern cameras , people began to_______ plastics for metal.
When traveling alone in the mountains, you ’d better take a _______ with you in case you get lost.
