II. Grammar and Vocabulary (15 points) 21. Hunger is _____ number one global health risk, so ______WFP has organized a lot of programmes, which targets people most at ________risk.
41. If it ______ for the fence, he ______ into the river.
A. were not; fallenB. had not been; could have fallen
C were not; could fall D. had not been; could fall