They usually have the medicine_______ before putting into the market all over the country.
| A．testing out | B．to be tested out |
| C．being tested out | D．tested out |
34. I like getting up very early in summer. The morning air is so good ______.
| A．to be breathed | B．to breathe | C．breathing | D．being breathed |
33.Mary,_______here---everybody else, stay away you are.
| A．come | B．comes | C．to come | D．Coming |
32. Premier Wen Jiabao has many important ______ of state to deal with.
| A．affairs | B．matter | C．business | D．Thing |
31. They had a desire that I______ their wedding.
| A．attending | B．attends | C．attended | D．attend |
30. They appeared ____ me, so I had to explain to them.
| A．misunderstanding | B．misunderstood |
| C．to be misunderstood | D．to have misunderstood |