______can I keep the book For two weeks.

sorLi always allows his students to voice their opinions in class, ______sometimes their opinions are not sound

The railway was opened＿＿＿＿＿＿traffic＿＿＿＿＿＿＿ April 4, 1985

It is quite impossible for people to do work in a day.

6The album (相册) is__________to me as it keeps a record of my childhood life