They knock door to door for hlep

They knock door to door for hlep While i was reading i heard someone____at the door of partiesA knocked B knocks C to knock D knock Remember ________ on the door before you _______other's rooms.Yes,I willA to knock ; entering B knock ; enterC to knock ; enter D knocking ; entering 27 If nobody answers the door bell ,try ___ the back door.A to knock at b.to knock c.knocking at d.knocking 需要详细分析 they were i______ by a knock at the door Mr wang came into the office without __the door A knock B knocking at C to knock at D knocking to Since the front door is locked,why not _____at the back door?Someone ,ight come out and answer it.A.to try knocking B.trying to knock C.to try and knock D.try knocking Did you hear someone___at the door when you___TV last night?A.knock,was watchingB.knock,watching C.knock,were watching D.knock,are watching when he heard a knock at the door ,he went _____ quicklyA the downstairs B downstairs C to the downstairs D to downstairs one night,they sit down for dinner and there is a knock at the door. finally they crossed the river__(succeed) he came in without __(knock) at the door [-A75] After a knock at the door,the child heard his mother's voice ______ him.A.calling B.called C.being called D.to call after a knock at the door,the child heard his mother' voice____him.A.to call B.calling C.called D.being called Did you hear anybody knock at the door?No ,I ____ to my MP3 .A,have listen B,listened C,was listening D,Listen 一道关于try to do和try doing用法的英语题!No body answer the front door.So he tried ____ at the back door.A.to knock B.knockC.knocked D.knocking应该选择哪个? knock at the door造句 Listen,someone______(knock)at door There seems to be no one at home -Why not()at the back door A.to try knocking B.to try to knockC.trying to knock D.try knocking