The units can be put into production only ________. b) after thorough testing
Nanotechnological materials are widely USED in biomedicine. a) applied
4.1 He didn't break his pencil.
4.2 I haven't seen this film.
4.3 You shouldn't put off your coat.
4.4 They are not discussing it now.
4.5 We didn't hope anybody to help us.
4.6 The discovery wasn't made in Russia.
4.7 She will not come back soon.