被动语态的练习1.The river smells terrible.People must ----- dirty t

1。 The river smells terrible。 People must ___A__ dirty things into it。 A。 be stopped to throw B。 be stopped from throwingC。 stop to throw D。 stop from throwing2。 Many kinds of new bicycles __B___ in Number One Machine Factory now。A。 are making B。 are made C。 have made D。 will make3。 Paper ___C__ first invented in China。 A。 is B。 are C。 was D。 were4。 –Do you like the flower? -Yes, it ____D_ sweet。 A。 is smelling B。 smelt C。 is smelt D。 smells5。 His schoolbag ___C__ away by a woman ten minutes ago。 A。 took B。 had taken C。 was taken D。 were taken6。 It snowed heavily last night。 The ground ___A__ thick snow。 A。 was covered with B。 was filled with C。 was made of D。 was getting on with7。 The light in the room ___D__ before you leave。 A。 must turn off B。 will turn off C。 are turned D。 must be turned off8。 Chinese ___A__ by Miss Wang three years ago。 A。 was taught B。 is taught C。 was teached D。 were taught9。 Young trees __C___ quite often。 A。 should water B。 should be water C。 should be watered10。 ___B__ the kind of question often ___B__ in your class, Ann? A。 Does; ask B。 Is; asked C。 Has; asked D。 Will; ask11。 The bridge over the river ___C__ three years ago。 A。 is finished B。 finished C。 was finished D。 has finished12。 The bridge ___C__ in three weeks。 A。 will build B。 is built C。 will be built13。 The League __D___ in May, 1922。 A。 found B。 was found C。 founded D。 was founded14。 The old men and the children must __D___ in our country。 A。 take good care B。 be taken good care C。 take care of D。 be taken good care of15。 The radio can ___C__ in two days。 A。 mend B。 be mend C。 be mended D。 mended16。 Alice is ill。 She ___B__ to hospital at once。 A。 is sent B。 must be sent C。 can send D。 must send17。 The flowers ___D__ every day, or they’ll die。 A。 must water B。 should water C。 can be watered D。 must be watered18。 Paul doesn’t have to be made ___B__。 He always works hard。A。 learn B。 to learn C。 learned D。 learning19。 In some part of the world, tea ___B__ with milk and sugar。A。 is serving B。 is served C。 serves D。 served20。 –Have you moved into the new house? -No, not yet。 The rooms __A___。A。 are being painted B。 are painting C。 are painted D。 are being painting