Our bodies are strengthened by takingexercise．_______our minds are developed by learning．

My mother usually watches TV _____ eight o’clock _____ ten o’clock in the evening.

Don’t worry. I’ve just sent an ambulance to you. They ________ be there any second.

He did not regret saying what he did but felt that he it differently.

It is obvious to the students ________ they should get well prepared for their future.[ ]