3 Complete the sentences with the correct form of the
verbs in brackets.
O The preservation (preserve) of the environment is our
top priority.
1 The doctor needs to
(analyse) Phillip's test
results to find out what is wrong with him.
2 The
(evolve) of computers means today's
models are smaller, faster and more powerful.
3 One student does the experiment and the other
(observe) and makes notes.
4 Remember that money will not
(solve) all
of life's problems.
5 Visiting Mars is the next big challenge in space
(explore).