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is drawn was drawn will be drawn has been drawn
2nd century 8th century 13th century 20th century
occupied has occupied had occupied has been occupying
making made to make for making
has finished have finished are finishing were finishing
has been conducting has conducted had conducted had been conducting
he has finished has he finished did he finish he finished
Yes. We need another week to complete it. Yes. It has been completed beautifully. No. It was completed last week. No. I have no idea about it.
having achieved achieving has achieved achieve
although while but though
was provided has provided provided has been provided
was interviewed by “The New York Times”. remained in the laboratory till June 25th. published some articles on the experiment. found out how the biological clock works.
are not known is not known has not known have not known
Yes. We need another week to complete it. Yes. It has been completed beautifully. No. It was completed last week. No. I have no idea about it.
Yes. We need another week to complete it. Yes. It has been completed beautifully. No. It was completed last week. No. I have no idea about it.
was interviewed by “The New York Times”. remained in the laboratory till June 25th. published some articles on the experiment. found out how the biological clock works.
is doing all has done an was doing the did an
try trying will try would try
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