I'll definitely be back home by Thursday. (It's certain) 6 Use the words in brackets to rewrite the sentences. 1 There's a very good chance that it will rain tomorrow. (probably). It will probably rain tomorrow. 2 It's possible that the underwater park will attract 750,000 visitors per year. (could) 3 It's possible that we'll go snorkelling this afternoon. (may) 4 It's likely that coral will soon grow on the sculptures in the underwater park. (probably) 5 It's just possible that we'll swim to the park today. (might) 6 It's certain that we'll go to Cancun next weekend. (definitely)​