Choose the correct words to complete the sentences.
1 The sea is very shallow / deep here, so only go into the water if you’re a good swimmer.
2 The man was close to the volcano / waterfall when it erupted.
3 We can’t jump across this stream because it’s very narrow / wide.
4 Stay away from that mountain / cliff – it’s easy to fall!
5 This road is very rocky / icy in winter, so don’t trip.