---Mary’s score on the test is the highest in her class. ---Really? She ______ have studied very hard.
___, but he still couldn't understand the logical connection of the two subjects.
It was no surprise that an awful accident ____ occur the day when they were drunk.
___ people food, jobs, housing, justice, compassion and equality is what a government should first consider after a natural disaster strikes.
As we know, a schedule may be more appropriately expnessed and analyzed if it is put a graph.
Like most simple puzzles, it is easily , but putting it back together is something else.