1) Someone told them a joke, they _____ since then. a) has been laughing b) has laughed c) have laughed d) have been laughing 2) How long _____ you _____ that newspaper? a) have / been reading b) have / read c) have / reading d) have / being read 3) She _____ the piano since she was 12. a) have played b) have been playing c) has played d) has been playing 4) My son _____ television for four hours. If he continues watching it, he'll certainly get a headche. a) has been watching b) have been watching c) has been watched d) has been watch 5) She _____ since 4 o'clock. a) has been waiting b) have been waiting c) has waiting d) have waiting 6) The dog _____ barking for twenty minutes. a) have bark b) has been barked c) has been barking d) has barked

Present Perfect Continuous

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？