Atthismomentthebellrang,________theendofclass.
A、announcedHisbackacheisonly_________fornotwateringtheflowers.
Woodisoften_________paper.
Noone_________ofit.
AnA4sizedpanel(太阳能板)putontothebackofajacketcosts__________US$15.Itcould__________acellphoneduringasummerwalk.
Onewaytounderstandthousandsofnewwordsistogain__________goodknowledgeofbasicwordformation.
