My documents are always ______ out according to the contents(内容) and dates so that I have no trouble in finding them when they _______

Some of my friends are interested in science, but none of them can tell ________.

Where does Mr. Black live Can you guess—– Sorry, I can’t guess ________.

观察下面4个选项,从中选出不同类的选项。

you like to come to the dinnerparty here on Saturday —Thank you. I’d love to, _____ I’ll have to finish all my homework before theweeked, otherwise, my parents won’t let me go.]