5** Rephrase the sentences using modal verbs.
1 It's likely that Clem has upgraded his phone. Clem may have upgraded his phone.
2 I'm sure Lucille has been talking on Messenger for an hour.
3 I'm sure that Colin is making a video call at the moment.
4 It's probable that the film will start soon.
5 I'm sure you have forgotten your password.
6 It's a good idea to learn how to make small talk at parties.
7 It wasn't necessary to charge my phone.
8 It's impossible that Kelly was texting her friends in class.
9 It's likely that Dan will call you on Viber. 10 It's against the law to use a mobile phone while driving. ​