下面句子有一处错误，请将改正后的答案写在横线上（每空一词）
He told me that the earth was much smaller than the sun.____

Today, computers are really helpful.They       everywhere.

根据提示填空（每空一词）
He ____ (weight) only 70 kilos now after taking a balanced diet.

—How clean your car is!
—Thank you. It        very often.