I feel a bit nervous since this is the first time that I _______ to give a lecture to so large an audience till now.
A.am invited | B.have invited |
C.have been invited | D.will be invited |
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I feel a bit nervous since this is the first time that I _______ to give a lecture to so large an audience till now.
A.am invited | B.have invited |
C.have been invited | D.will be invited |