"They have many difficulties to complete the project in two years." 这句话对吗?如果哪位能够帮忙分析一下错在哪里或者分析一下句子结构就更好了，

Do they have many things on sale? They have many books(改为一般疑问句) They have ( )(成为) friends for many years They have many clubs.一般疑问句 They have many photos.(变为否定句) They have many pets,i______ three cats. they have many knives 单数句子 They have many erasers改为肯定句They have many erasers改为肯定回答 i have many friends,and they have d() favorite subject. They have many balls,but we have [m ] They have drawn many pictures.对drawn many pictuThey have drawn many pictures.对drawn many pictures划线提问 They have many sports clubs 对many sports clubs 提问 前面两个空格 thay have? it's hard to say they have many things in ) they have many friends.（改为一般疑问句） they have got many bananas.(改为一般疑问句） they have been good friends for many yeas句子成分 They don't have ______(many)time now They have got many bananas.改成一般疑问句