A great deal of advanced science and technology has been ______ since China carried out the reform and opening policy.
| A．brought down | B．brought in | C．brought out | D．brought up |
51. They planned to go to Beijing for sightseeing, but because of their daughter’s unexpected illness they had to stay at home _____.
| A．instead | B．really | C．however | D．Though |
50. The lazy boy got up very late and went to school in a hurry. When he arrived at school, he found that he had put his socks on _______.
| A．outside | B．inside out | C．side out | D．back out |
49. --- Does he study very hard at school?
--- Yes, he studies _____.
| A．very indeed hard | B．hard very indeed |
| C．very hard indeed | D．indeed very hard |
48. I will ask my father to telephone you _____ he comes back.
| A．hardly | B．suddenly | C．quickly | D．Immediately |
47. I'd like to go with you., I have to finish the report now.
| A．However | B．But | C．And | D．So |