24．The policemen_______the stolen place again and again，and finally they found the evidence who stole the antique（古董）．
| A．got through | B．picked up | C．went over | D．turned over |
He wants to see changes in the company and I am sure he will, ______.
| A．on time | B．at a time | C．at one time | D．in time |
________ seems strange to us is ________ the troublesome boy is getting along well with all his teachers.
| A．It; that | B．What; how | C．It; how | D．What; that |
We should consider the students’ request _____ the school library provide more books on popular science.
| A．that | B．when | C．which | D．what |
Working hard is not only a _____ of great success, but it is among the essential requirement.
| A．sign | B．singal | C．guarantee | D．expectation |
We were strongly recommended that we _____ in Malaysia.
| A．didn’t travel | B．wouldn’t travel | C．hadn’t travelled | D．not travel |