“Mum, why do you always make me eat an egg every day?” “________ enough protein and nutrition as you are growing up.”

He was really disappointed to find that he had failed to make himself ______, although he tried his best to describe vividly.

The first textbooks ______ for teaching English as a foreign language came out in the 16th             century. 

There was nothing we could do that day ____ him down but _____ him in the house.

. He has promised ＿＿ her to choose her own husband.