—Here are three books on history. Which one would you like to borrow?一 ______. You see，I’m interested in geography these days.

— Can you come on Friday or Saturday? — I’m afraid ______ is possible．I will go to the hospital to look after my friend．

I find     important to have some communicative skills.

----Which of the electronic dictionaries do you like most?-----______.They are both expensive and of little use.

The sick salesman was happy to stay at home because doing _____ was a thorough rest for him.