I feel it is you as well as your wife that for your son’s bad performance at school.
| A．are to blame | B．is to be blamed | C．are to be blamed | D．is to be blamed |
Russia is _________ on the north of China.
| A．bounded | B．bound | C．boundary | D．lied |
Lately some scientists are experimenting ___________ white mice to ____________ this kind of medicine.
| A．on,try on | B．with, test on | C．on ,test out | D．with,carry out |
When the reached the top of the hill ,they _______________ so they had to stop for a rest.
| A．held their breath | B．out of breath | C．lost their breath | D．breathed deeply |
John ____________ his students is playing basketball on the playground.
| A．as well | B．as well as | C．and | D．together |
He does ___________________ that he cannot spare no time to play with his children.
| A．such busy a job | B．so a busy job | C．such busy job | D．so busy a job |