Now, the world’s focus is all on Shanghai ______ the 2010 world Expo is to be held.
| A．when | B．whose | C．where | D．that |
When you copy this paper, be careful not to ______ a single word.
| A．leave out | B．come out | C．set out | D．bring out |
Why does she steal things ________ she could easily afford to buy them?
| A．when | B．where | C．unless | D．which |
My parents would have come to see you if it had been possible, but they ________ so busy.
| A．were | B．had been | C．have been | D．would be |
Mary is a(n) _______ customer, so the waiter knows her likes and dislikes.
| A．usual | B．ordinary | C．common | D．regular |
Recently I bought a ticket for Shanghai World Expo, _______ was very reasonable.
| A．the price of it | B．whose price | C．the price of whose | D．the price |