1 Rewrite each sentence sa that it contains according to.
a Experts say that school science textbooks are not good at teaching science.
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b Their reports say that most books cover too many topics.
c These experts believe that the classroom activities in the books don 't heIp students leam basic
scientific ideas.
d One scientist said the books are 'full of unconnected facts'.
e Some educational experts say that students Ieam science more effectively when they try to
answer an everyday question.
f These experts say that a question such as 'Why is the sky bIue?' is the kind of science question
students like answering.
g This theory suggests that students Ieam better if they carry out project wark based onthis
kind of question.
h However, many science teachers believe that the school syllabus does not allow enough time
for this kin d of expIoration.
2 Rewrite each set of sentences as one sentence 50 that it contains instead. Addar, and, but
and sawhere necessary.
a You don't have to use butter. You can use olive oil.
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b Cooking spoils the flavour of carrots. Eat them rawo
c This is usually made with apples. Or you could try pears.
d Fresh fish is best for this recipe. You can use frozen fish.
e Try leaving out salt. Use other spices.
f Sweets are fattening. Eat fresh fruit.
g You don't have to use cream. You can use yoghurt.
h In same versions of this dish beef is not used. Lamb is used.
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