________ is often the case, we have worked out the production plan.

My parents have promised to come to see me before I ______ for Africa.

Which of the two computer games did you prefer?—Actually I didn’t like ______.

 It was not until dark __________ he found __________he thought was the correct way to solve the problem．

In a modern society full of fierce competitions, _______a person does is not always the same as _____he says.