Theboycomplained_______apaininhisstomach.
A、withD
complain of ：抱怨，说自己有病。句意：这孩子说他肚子痛。
His intelligence will ________ him to get a scholarship to college.
If the operation ________ carefully prepared, it would not have been successful.
Itisdifficultto________theimplicationbetweenthelines.
It is important to ________ your skin from the harmful strong sunlight.
We_____knowledgefromourfamilies,schools,jobs,andthemassmedia.
