.
The bill you sent me is incorrect, sir. ________, it isn’t the first time.
| A.Worse still | B.On the contrary | C.For one thing | D.In all | 
Two lawyers were told not to leave the building but no reason for this _____ was given.
| A.convenience | B.instruction | C.explanation | D.construction | 
– Why didn’t you tell him about the meeting?
 – He rushed out of the room _____ I could say a word.
| A.before | B.until | C.when | D.after | 
Not until all the fish died in the water _____ how serious the pollution was.
| A.did the villagers realize | B.the villagers realized | 
| C.the villagers did realize | D.didn’t the villagers realize | 
.– George and Lucy got married last week. Did you go to their wedding?
 – No, I _____. Did they have a big wedding?
| A.was not invited | B.haven’t been invited | C.hadn’t been invited | D.didn’t invite | 
We all know the truth _____ there are air, water and sunlight there are living things.
| A.where | B.wherever | C.that | D.that wherever |