The research is so designed that, once _______, nothing can be done to change it.
| A．begins | B．having begun | C．begun | D．Beginning |
at in this way, the present situation about the H1N1 Flu doesn’t seem so terrible.
| A．Looked | B．Looking | C．Having looked | D．To look |
Jane was disappointed that most of the guests ______when she at the party.
| A． | left; had arrived | B． | left; arrived  |
| C． | had left; had arrived | D． | had left; arrived |
She stepped into the bedroom quietly she might wake up her roommates.
| A．for fear that | B．so long as | C．on condition that | D．in order that |
Many people have been ill from a strange disease these days, we’ve never heard of before.
| A．one | B．that | C．it | D．this |
It was _____ great shock to the world that two planes crashed into _____ World Trade Center in New York on September 11th, 2001.
| A．a; / | B．a; the | C．the; the | D．/; the |