0  313815  313823  313829  313833  313839  313841  313845  313851  313853  313859  313865  313869  313871  313875  313881  313883  313889  313893  313895  313899  313901  313905  313907  313909  313910  313911  313913  313914  313915  313917  313919  313923  313925  313929  313931  313935  313941  313943  313949  313953  313955  313959  313965  313971  313973  313979  313983  313985  313991  313995  314001  314009  447090 

20. --- I think the waiter has forgotten us. We ________ here for over half an hour!

  --- I think you’re right. He probably thinks we have already ordered.

    A. are waiting                      B. have been waiting

    C. have waited                          D. will wait

试题详情


同步练习册答案