Is it a wonder that ____little cells can store 　much energy?

He knew his daughter was crying ____ what he had said.

_______hard you try, it is difficult to lose weight without cutting down the amount you eat .

The young man, ______ several attempts to beat the world record in high jumping, decided to have another try.[ ]

The expert’s theory, _____ my opinions were based, proved right in the end.[ ]