FCE - Word Formation - Noun/Verb/Adjective

My (a)   is that I care too much. (WEAK)

The disease can (a)   the immune system. (WEAK)

Tom certainly fits the (a)   that the police gave us. (DESCRIBE)

The book is basically (a)   , with little theory. (DESCRIBE)

She's entered a crossword (a)   . (COMPETE)

How many (a)   took part in the race? (COMPETE)

We live in a very (a)   world. (COMPETE)

It took a lot of (a)   to convince them of the advantages of the new plan. (PERSUADE)

His arguments are usually very (a)   . (PERSUADE)

Max has no (a)   of the finer things in life. (APPRECIATE)