invent1.
This machine can be
invented by anyone like Dr. Lee.
2.This machine that
can help most people to cure their diseases was invented by Dr. Lee last
year.
3.This machine that
can help most people to cure their diseases will be invented by Dr. Lee
next month.
4.This machine that
can help most people to cure their diseases is being invented by Dr. Lee
right now.
5.This machine that
can help most people to cure their diseases was being invented by Dr. Lee
when the World War II was ended.
6.This machine that
can help most people to cure their diseases has been invented by Dr. Lee
for three years.
7.This machine that
can help most people to cure their diseases had been invented by Dr. Lee
for three years when his wife died lat year.
8.This machine that
can help most people to cure their diseases will have been invented by Dr.
Lee when he turns 67 years old. |
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