Tom _______ the TV set for $500，which was much cheaper than he had expected

The hurricane damaged many houses and business buildings; _____, it caused 20 deaths [ ]

Qingming Day is also a day ____ people whose parents are dead visit the cemetery.

While there are some differences in the education systems in many countries in the world, education is __________.

It is important to introduce children to healthy nutritious foods from ________ they begin to eat solids