> 其他 >
He has been ill for several weeks,so he has ______ in learning Maths.
人气:236 ℃ 时间:2020-04-22 11:56:12
解答
A many difficultsdifficult可数,trouble不可数
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版