Atthismomentthebellrang,________theendofclass.
A、announcedJohnsaidhewouldpay__________secondvisittoChina__________nextmonth.
Thenumberoftallbuildings__________greatlyinTianjininthelastfewyears.
Forsomereason,it__________alldayoverthetwoweeks.
Ourteacher__________ustopractiseourspokenEnglishasoftenaspossible.
Idon'tknow_________.