______ metals are good conductors, silver ______ the best conductor of all.
| A．Almost, being | B．Almost all, being |
| C．Almost, is | D．Almost all, to be |
28.Which sentence is wrong?
29.
| A．I felt it impossible for him to take the exam. 30. |
B．I found it impossible that he might take the exam. 31. |
C．I thought that he might not take the exam. 32. |
D．In my opinion he might take the exam. |
33.I don't think_____________difficult for a Chinese student to master a foreign language within five years
34.
| A．that | B．it | C．too | D．very |
35..It's the second time you_________late this week.
36.
| A．arrive | B．arrived | C．have arrived | D．had arrived |
37.It will not be__________we meet again.
38.
| A．long before | B．before long | C．soon after | D．shortly after |
39.It's demanded that we____________there on foot.
40.
| A．not to go | B．don't go | C．not go | D．won't go |