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It is I ____ singing in the garden.

      A. who are             B. who is            C. that am          D. that is

It is I ____ singing in the garden.

    A. who are             B. who is            C. that am          D. that is

It’s the test system rather than the teachers ________to blame for the students’ heavy burden nowadays.

A. who are                           B. whom is                  C. that is                                D. that are

The black teacher set a good example _____ all the rest of the group, ____  all peace-loving people.

The black teacher set a good example _____ all the rest of the group, ____   all peace-loving people.

A．for; who are  B．for; which was  C．to ; which are  D．to; who are