perform
1.They perform
an opera on the stage everyday.
2.They
performed an opera on the stage yesterday.
3.They will
perform an opera on the stage tomorrow.
4.They are
performing an opera on the stage.
5.They were
performing an opera on the stage while I was
going to the toilet.
6.They will be
performing an opera on the stage when Tom
writes a story at home.
7.They have
performed an opera on the stage.
8.They had
performed an opera on the stage when I bought
a coke.
9.They will
have performed an opera on the stage for a
while before I bring flower to them.
10.They have
been performing an opera on the stage for one
hour.
11. They had
been performing an opera on the stage for an
hour when the president came here.
12.They will
have been performing an opera on the stage
for two weeks by the end of this month when I go abroad. |
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