Was it in 2002 __________ he was still at middle school __________ the boy became expert at computer?
______ the house prices have risen sharply,the number of buyers is as great as ever.
—Do you think he'll succeed?—Well, he's helped by so many classmates,what is more,he works extremely hard. So he will ______ succeed.
Eating too much fat can ______ heart disease and cause high blood pressure.
He is ______ a teacher to me, and he is also my friend.
That night he returned home, ______ .