Several loudspeakers are _______ from the ceiling and we can hear the speaker very clearly.
D
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ThecollegestudentsinChinaare_______fromsmokingoncampusbecausethiswilldothemnogood.
Whentravelingaloneinthemountains,you’dbettertakea_______withyouincaseyougetlost.
Withthe_______ofMary,allthegirlstudentsareeagertogototheparty.
Ifyouhaveanyproblemsduringyourstudyhere,pleasedonot_______tocallmeforhelp