What do you think about it? b Replace the bold words in sentences 1-5 with a more formal word or expression. 1. Students will be tested on vocabulary and grammar in this part of the test. lexis 2. Candidates are asked to switch off their mobile phones before the exam. r__ [results] 3. A serious mistake has been found in the manuscript e ___. [expressions] 4. This is an automatically generated email. Please do not attempt to answer it. r __ [return] 5. Children brought up in a bilingual environment may have more than one native language. t __ [tongue]