My brother usually _____ his classroom after school. But now he _____ basketball.

_____ the Great Green Wall, the land produces (生产出) more crops.

His opinion was such a good one _________ his family all agreed to accept．

I’m going to the United States.—How long ______ you ______ in the United States?

下列各句中，加点词的用法分类正确的一项是(　　)①策扶老以流憩　 ②或棹孤舟　③雄州雾列，俊采星驰　④而后乃今将图南　⑤则刘病日笃　 ⑥臣不胜犬马怖惧之情 ⑦眄庭柯以怡颜