Lesson 11
Ex. 3 Complete these sentences. Use can or could + one of these verbs.
To obtain, to occur, to show, to remove, to constitute, to store, to have
1. could obtain
2. can occur
3. can constitute
4. could remove
5. can store
6. can have
7. can show
Ex. 4 Complete the sentences using can or may/might/could.
1.Saturated hydrocarbons …..be linear or branched.
2.She ……finish her experiment tomorrow.
3. The release of energy in chemical reactions ….. occur when the reactants have higher chemical energy.
4. I think Michael …. Be at the university now. I will go and check.
5. I think Ann …..titrate the solution which she has just obtained tomorrow.
6. The reaction of hydrochloric acid, HCl, with sodium hydroxide, NaOH, solutions …. Produce a solution of sodium chloride.
7. 3-methylhexane and branched hydrocarbons …. Be chiral.
Ex. 5 Correct the mistakes in the sentences.
1. may be
2. can react
3. are
4. Can …carry out
5. can be
6. can have
7. Can …measure
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