His parents made a suggestion that hean hour for exercise every day.

My family always have a party the evening of Christmas.

This morning your mobile phone was always busy. I couldn’t ________ to you until several attempts.—Oh, I’m sorry. I was discussing the price of our products with a client over the phone.

I don’t think _______ Maths is easy.

下列各句中，没有语病的一句是（ ）