NO it's not A. 关键在于"been". Answer is C.
It doesn't seem to have any difficulty "it" 就指"那个", 可以指猫猫狗狗反正不是人.
There doesn't seem to have been any difficulty, have been 就把意思改了, 变成"好像没有任何难题/问题". 是指一种情况"有没有过...(问题)"
NO it's not A. 关键在于"been". Answer is C.
It doesn't seem to have any difficulty "it" 就指"那个", 可以指猫猫狗狗反正不是人.
There doesn't seem to have been any difficulty, have been 就把意思改了, 变成"好像没有任何难题/问题". 是指一种情况"有没有过...(问题)"