ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
A、mustn’tAbeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice
Hotmetal________asitgrowscooler.
ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
Night________(fall),wehurriedhome.
________(fail)severaltimes,theyneedsomeencouragement.