It will be a while_____ the real-estate problems _____are the root cause of the price rises are solved

You’d better not phone me tomorrowevening; I ____ an important meeting then

Our teacher often tells us _____ to the old politely .

Western food doesn’t taste so nice Chinese food. But it is moreexpensive traditional Chinese food.

下列各句中，没有语病的一句是( ）