2. Выберите одно слово или фразу, которые лучше передают смысл предложения.
The units can be put into production only ________.
a) tested
b) after thorough testing
c) once
d) last year


3. Подберите к подчеркнутому слову (USED) то, которое лучше передает смысл предложения.
Nanotechnological materials are widely USED in biomedicine.
a) applied
b) provided
c) useless
d) well-known

4. Постройте отрицательные предложения.
4.1 He broke his pencil.
4.2 I have seen this film.
4.3 You should put off your coat.
4.4 They are discussing it now.
4.5 We hoped somebody to help us.
4.6 The discovery was made in Russia.
4.7 She will come back soon.