_____ has Simon visited the Great Wall when he stays in China? [ ]

Not only _________ to the zoo, but also he ________ a good time.

When are you going to Hainan?—I am going there ___ June 8, 2011.[ ]

_____, we need to imporve the equipment in our factory.

Thereisn’tsomuchnoiseinthecountry______inbigcities. [ ]