I’d like to start my own business next year – that’s _________ I will face my big challenge in life.

The incomes of skilled workers went up. ____, unskilled workers saw their earnings fall.

The charity sale our school organizes every year has taught us much that we would never have________ learned in class.

All of us are_____aware of the cause of this failure, so do not make the same mistake again.

However weak we are, we can still do something against the powerful nature as long as we are ______ prepared.