问题

Linda can’t attend the party________ atTom’s house at present because she is preparing a speech for the party ________at Marie’s house tomorrow.
A:being held; to be held
B:to be held; held
C:held; being held
D:to be held; to be held
B:to be held; held
C:held; being held
D:to be held; to be held
正确答案是: