_____ suddenly occurred to me _____ I had to attend an important meeting in Shanghai the next day.
| A．It; which | B．What; that |
| C．What; which | D．It; that |
Finally she got too tired and fell asleep at the desk, her right hand still ______ a pen.
| A．held | B．to held | C．holding | D．was holding |
Whenever asked to help me with my lessons, he always refuses, ______ he is too busy.
| A．to say | B．saying | C．says | D．having said |
______ its size with that of the whole earth, we find the highest mountain does not seem high at all.
| A．When compared | B．Compared to |
| C．To be compared | D．Comparing |
“How can we go outing in this kind of weather!”! Bob said,__________ out of the window.
| A．looking | B．looked | C．to look | D．having looked |
All the preparations for the work_______, we’re ready to start.
| A．are completed | B．have been completed |
| C．completed | D．had been completed |