— There are so many books here. It _____ very difficult to decide which one to buy.— Don’t worry, and ______ you will find your favorite book soon.
—When did you get to the top of the mountain?— When we got there, the sun just _________.
— My best friend is _______ than me.— That’s why there are hardly any smiles(笑容) on his face.
---What do you think of your math teacher’s lessons?----We all like his classes. He likes telling ______ in class.
— ______ he studies hard every day, ______ he didn’t pass the exam.— I am sorry to hear that.