Science: A material that is see-through is called ______

Science: A material that lets some light through is called ______

Writing: which word should the comma go after in this sentence?

After the battle we were so tired but happy to be alive.

Writing: which word should the comma go after in this sentence?

For many days we trained so we were ready to fight.

Writing: which word should the comma go after in this sentence?

All of a sudden the centurion yelled and the battle began.

French: How do you say, "I like strawberries"?

French: How do you say, "I like pears"?

History: Who wore togas?

History: Who lived in insulae?