His entire moneyno more than one hundred dollars when he arrived in America in 2000.

Parents ________ much importance to education. They will do their best to give their children that priceless gift..[ ]

The research mainly deals with the difficulty the students have ________ their attention on their study all the time. [ ]

Our school held a sports meeting______ the end of last year.

下列各句中，表达得体的一句是（ ）