COULDN’T/TO /WHICH/ PITY/ PHONG/ COME/ THE/ A / WAS/ PARTYA. PHONG...
31. couldn’t/to /which/ pity/ Phong/ come/ the/ a / was/ partyA. Phong couldn’t come to the party, which was a pity.B. Phong, which was a pity couldn’t come to the party.C. Phong, which couldn’t come to the party was a pity.D. Phong was a pity, which couldn’t come to the party.