He speaks English well indeed, but of course not _____ a native speaker.
| A．as fluent as | B．more fluent than |
| C．so fluently as | D．much fluently than |
Tom was about to close the window__________his attention was eaught by a bird.
| A．when | B．if | C．and | D．till |
welast night,but we went to the concert instead.
| A． | must have studied | B． | might study | C． | should have studied | D． | would study |
come（）
| A． |
cold |
B． |
cock |
C． |
comfort |
D． |
improve |
The book has been translated into thirty langungen tince iton the markat in 1973.
| A． | had come | B． | has come |
| C． | came | D． | comes |
To improne the pmlity of our products we uaked for nuggratior ahad used the producu.
| A． | whacver | B． | who |
| C． | whichever | D． | which |