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A number of scientists found genes in the 18th and 19th centuries. Scientific discoveries were made one after another in the 18th and 19th centuries. Many scientists succeeded in finding out how the features of living things were passed on to the next generation in the 18th and 19th centuries. It took a long time for scientists to find out why members of the same family look like each other.
/； a /；th the； a the； the
sometimes; sometime sometime ;some time some time ;sometimes some times ;sometimes
for a time for some time at a time in time
sometimes; to some time; to some times; for some time; for
some time sometime sometimes some times
for every time every time by the time some time
Any Some Some other Other
some time sometime sometimes some times
sometime; sometime sometimes; some time some time; sometime some times; some time
Some cultures favor the past time. Some cultures have the tendency to favor the present time. Some cultures tend to favor the future time. All of the above.
sometime some time some times from time to time
must be in the U.S.A. for some time must have been in the U.S.A. for some time should have been in the U.S.A. for some time may be in the U.S.A. for some time
sometime, for some time, for some times , to some time, to
for every time every time by the time some time
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