2.Mr.Smith spoke at the meeting yesterday.

(A)将下列肯定句改为否定句：

1.She is from the south.

6.We were glad /pleased /overjoyed to hear that all the school teachers in our country would get a pay raise /rise (have a raise /rise in pay).

5.It was reported in /by yesterday's newspaper that a Chinese woman doctor had come home from the United States soon after she(had)discovered /made the discovery of a new theory in medicine.

4.There is something wrong with the refrigerator,I must have it repaired.

3.The old peasant suggested that a reservoir(should)be built at the foot of the hill.

2.I happened not to be at home /not to be in /to be out,(didn't happen to be at home)when the fire broke out.

1.Do you know the names of the two American astronauts who were the first (men) to land on the moon或landed on the moon first.

12.What he needed was not a future scientist,···