In that school, English is compulsory for all students, but French and Russian are ______.

Tom is only ______.I don’t think a _______ boy should be allowed to drive.

Successful people always make ________ preparations for any potential setbacks.

The house rent is ____ higher. I get about half the space I had at home but I’ll have to pay _____ here. 

---Have you read the book?---Yes. But that one is _____worth reading. I suggest you______ it if you have time.