Not until she took off her glasses ______ she used to be my neighbor.
| A．I realized | B．I had realized |
| C．had I realized | D．did I realize |
The second-hand car she bought was almost new ,______,it was in good condition.
| A．however | B．besides | C．though | D．therefore (表示一种因果关系) |
This pair of trousers isn’t good but that pair is ____better.
| A．rather | B．hardly | C．less | D．even |
_____,I think , and the problems could be settled .
| A．If you double you efforts | B．So long as you keep up your spirts |
| C．Making greater efforts | D．A bit more efforts |
By now we’ve (already) nearly stopped writing to each other .
But ______we kept in touch regularly .
| A．all the time | B．at times | C．at one time | D．In no time |
No matter how the enemy frightened him ,he ______say a word .
| A．did not | B．could not | C．might not | D．would not |