It is obvious how bad movies will impact ________ children.
A、onA
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。
Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.
It is obvious how bad movies will impact ________ children.
On average about ￡5000 a year is spent on each private school pupil,_______ the amount spent on state school pupils.
Thewoundedsoldierswouldrecoverquicklyiftheywerewell________.
_______atallisworthdoingwell.
