There have been many turning points in my life, but the most significant one was when I was eight years old.
A、gerund
B、present participle
C、/
D、/
A、gerund
B、present participle
C、/
D、/
How many performances have been planned for the conference?
A.One.
B.Two.
C.Three.
D.Not mentioned.
A UFO was reported______ last night by many people.
A.to be seen
B.to have been seen
C.having been seen
D.having seen
A good many (build) ______ have been burnt during the fire.
A.Many
B.have been
C.course
D.of the city
We on it for many hours but we have not yet reached any conclusion.
A.work
B.have been worked
C.have been working
D.are working
Many new games have been designed to (play) ______ on the computer. People of all ages have been playing them.
Those two families have been quarrelling ________ each other for many years.
A、to
B、between
C、against
D、with
How many new students have been taken in this year?
______ new students.
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