It rained hard yesterday, ______ prevented me from going to the park.
B
本句话为非限制性定语从句,所以不能用that来引导。在本题中,prevent由于是行为动词,所以正确选项应为B。
We_____knowledgefromourfamilies,schools,jobs,andthemassmedia.
Hewouldhavegivenyoumorehelp,ifhe________sobusy.
Becauseofthebadweather,thesportsmeethadtobe________.