Radium salts，which have been found to ______ in bones，give rise to bone cancer.
| A．pile up | B．build up | C．keep up | D．pull up |
I couldn't do my homework with all that noise ________．
| A．going on | B．goes on | C．went on | D．to go on |
April 21 was the national memorial day ____ were killed in Yushu Earthquake on April 14 2010.
A in honor of any one who B in celebration of those who
C in memory of whoever D in charge of no matter who
All the Chinese people are expecting the government’s four-thousand-billion financial plan
around the country, ________ to improve the current economic situation.
| A．carried out, intending | B．being carried out, intended |
| C．to be carried out, intending | D．to be carried out, intended |
Jack must be helping his grandma to water the flowers, ________?
| A．is he | B．isn’t he | C．must he | D．mustn’t he |
On hearing the news, he stood up, and. ________the dictionary lying open on the desk,out of the classroom.
| A．leaving; rushed | B．left; rushed | C．leaving; rushing | D．left; rushing |