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WorksheetsWhat about the negative and interrogative?
Total questions: 10
Worksheet time: 5mins
1. Unknown cavemen discovered fire
Fire is discovered by unknown caveman.
Fire was discovered by unknown caveman
2. Pfizer Company discovered by accident the effects of the Viagra pill.
The effects of the Viagra pill were discovered by Pfizer Co. by accident
The effects of the Viagra pill was discovered by Pfizer Co. by accident
3. Leo Baekland from Belgium produced the first plastic in 1907.
The first plastic is produced by Leo Baekland in 1907.
The first plastic was produced by Leo Baekland in 1907.
4. Thousands of people use saccharine everyday to sweeten coffee or tea.
Saccharine are used everyday to sweeten coffee or tea by thousands of people
Saccharine is used everyday to sweeten coffee or tea by thousands of people.
5. Percy Spencer invented the modern microwave oven.
The modern microwave oven was invented by Percy Spencer
The modern microwave oven is invented by Percy Spencer
6. People heat food in the microwave oven everyday.
Food is heated in the microwave oven everyday by people
Food was heated in the microwave oven everyday by people
7. Wilhelm Röntgen discovered X-rays in 1895
X-rays was discovered in 1985 by Wilhel Röntgen
X-rays were discovered in 1985 by Wilhel Röntgen
8. Charles Goodyear found the importance of vulcanized rubber.
The importance of vulcanized rubber was found by Charles Goodyear
The importance of vulcanized rubber were found by Charles Goodyear
9. People use Vaseline to cure cuts and burns.
Vaseline is used by people to cure cuts and burns
Vaseline was used by people to cure cuts and burns
10. Robert Chesebrough discovered the use of a waxy substance called Vaseline.
The use of a waxy substance called Vaseline was discovered by Robert Chesebrough
b) The use of a waxy substance called Vaseline were discovered by Robert Chesebrough
