1£®I have lost one of my gloves.I ________ it somewhere.
A£®must drop¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B£®must have dropped
C£®must be dropping D£®must have been dropped
2£®________time went on£¬the people in the area came to realize how seriously the environment had been polluted.
A£®As B£®With
C£®When D£®While
3£®As soon as I was on________£¬I began to have second thoughts about leaving.
A£®abroad B£®broad
C£®aboard D£®board