Help please Task 2.23. Put questions to the underlined words:
1. (Yesterday) we were shown the laboratory of organic chemistry.
2. The new sort of steel is being tested (by the engineer).
3. The experiments have shown to us that (the gas is inflammable).
4. The flame of the burner can be regulated by (means of a tap).
5. They heated (the substance) by means of a Bunsen burner.
6. The new lab consists of (several rooms).
7. Every working place is fitted with (a Bunsen burner).
8. The analytical balance must be kept (in a glass case).
9. You will see (a great variety of apparatus) if you visit this laboratory.
10. All the questions had been answered (by the end of the lecture).
11. A barometer measures (air pressure).
1. WHEN were you shown the laboratory of organic chemistry?
2. BY WHOM is the new sort of steel being tested?.
3. WHAT have the experiments shown to us?
4. HOW can the flame of the burner be regulated?.
5. WHAT did they heat by means of a Bunsen burner?
6. WHAT does the new lab consist OF?
7. WHAT is every working place fitted with?
8. WHERE must the analytical balance be kept?
9. WHAT will you see if you visit this laboratory?
10. WHEN had all the questions been answered?
11. WHAT does a barometer measure?
Объяснение: