Enough and too.
Enough + noun
I have got enough problems to be depressed.

Adjective/adverb + enough
He is clever enough to pass all his exams.

Too + adjective/adverb
He is too stupid to understand.

Too + many/much + noun
There is too much snow for us to drive today. You have made too many mistakes.

EXERCISE 1 FILL THE GAPS USING TOO OR ENOUGH AS IN THE EXAMPLES ABOVE:
1 - This glass isn't (big) ... Give me another one. 2.- We haven't ... got chairs. Go and get another one.
3.- The wine was (cold) .... . I couldn't drink it. 4.- That cheese is very expensive. I haven't got ... money to buy it.
5.- I didn't find an empty seat. There were … people on the bus
6.- There's a lot of food. It's … food for two people.
7.- This coat isn't (warm) .... I need a thicker one.
8.- We haven't got … … tables for fifty people to have dinner.
9.- This tea is (hot) ..... I can't drink.
10.- This floor is (dirty) .... I can't clean it.
11.- It was (cold) … we couldn't go out.
12.- Our teacher asks us to do .... exercises.
13.- We've got … homework everyday. We've got no free time.
14.- You are (old) … to learn english.
15.- The books were (heavy) …. for me to carry. 16.- His words are (clear) … for everybody to understand.
17.- The bedroom was (small) … for five people. 18.- He's (clever) ... to do that exercise.
19.- Our house is small you mustn't invite .... people.
20.- You have to drive. you mustn't drink .... whisky.​