1 These exercises aren't easy enough. (difficult) -->

The Romans left Britain at the beginning of the fifth century when the Roman Empire became (2) not big enough / too big and the wall began to become a ruin.

2 We had enough time to visit the castle, but it was ... (crowded).

4 I wanted to go to the opera, but I didn't have ... (money).

2 The Formula 1 car isn't fast enough. (slow) -->

You cannot walk on the entire wall because it (3) is strong enough / isn't strong enough

It was built by the Roman Emperor Hadrian and for centuries it was (1) big enough/ enough big to stop the barbarians invading England.

, but go in summer because in winter it's (6) too wet / wet enough!

1 It was too cold to visit the caves. It was ... (warm).

5 The reef is not safe for children. It's ... (dangerous).

If you have (5) too time / enough time, you can walk next to the wall for 135km,

You cannot walk on the entire wall because it's (4) too old / not old enough.

3 Ted is the right height to join the army. (tall) -->