It is obvious how bad movies will impact ________ children.
A
impact有时也可以当作一个动词来用，与之搭配的介词仍然是on。句意：坏电影对儿童会产生什么影响是显而易见的。
Thewoundedsoldierswouldrecoverquicklyiftheywerewell________.
Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.
Onaverageabout￡5000ayearisspentoneachprivateschoolpupil,_______theamountspentonstateschoolpupils.
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.