The key to exercise solutions in chapter 1.3 - Mobile connections for the textbook New Total English Upper-Intermediate - Students' Book with authors Araminta Crace and Richard Acklam from Pearson Education
Question
Discuss the questions.
Answer
1
to stay in touch; to keep in touch (to maintain contact)
2
to be in touch / to be out of touch (to be in / out of contact with someone)
to get in touch / to lose touch (to contact someone / to no longer be in contact with someone)
to touch base means to contact friends or home just to check for any news