The man _______ around our school is from America.
| A．which you showed |
| B．you showed him |
| C．you showed |
| D．where you showed |
The way the guests ___ in the hotel influenced their evaluation of the service.
| A．treated |
| B．were treated |
| C．would treat |
| D．would be treated |
Scientists have many theories about how the universe ___ into being.
| A．came | B．was coming |
| C．had come | D．would come |
She'll never forget her stay thereshe found her son who had gone missing two years before.
| A． | that | B． | which | C． | where | D． | when |
My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive . 
| A．as | B．so | C．too | D．very |
—You speak very good French!
—Thanks. I __________ French in Sichuan University for four years. 
| A．studied | B．study | C．was studying | D．had studied |