Study hard, and      will be difficult.

--- What ________ useful book ! ---Yes, it is. But I found___________ difficult for me to read.

－Mom, where’s my backpack?－You shouldn’t put your things casually, you should take good care of _____ own things. 

— Who will send you to the new school, your father or your mother? — ________. I will go there alone.

---Is this your English book?---No, it isn’t. ________ is in ________ bag.