Complete the 12 sentences below. Choose the best answer for each one.
1............... the article, the new battery can store energy for ten hours.
Wrong!
Use "According to" when the sentence reports information from a named source, such as the article.
2The results look promising. ..............., the scientists say more tests are needed.
Wrong!
Use "However" to introduce a contrast between two ideas: promising results and the need for more tests.
3The temperature rose by two degrees; ............... the ice melted faster.
Wrong!
Use "therefore" to show that the second idea is the result of the first idea.
4The chart shows that children drank less water ............... adults.
Wrong!
Use "compared with" when the article shows differences between two groups.
5The study ............... that sleep may affect memory.
Wrong!
Use "suggests" when the article reports a possible explanation, especially with the cue "may".
6In the article, researchers carried out an ............... to test the effect of light on plants.
Wrong!
Use "experiment" for a test that scientists do to find out what happens.
7The scientist ..............., “This chemical slows the reaction.”
Wrong!
Use "explains" because the quoted words give a reason for the result.
8............... they measured the samples, the team cleaned all the tools.
Wrong!
Use "Before" to show that one step happened earlier than the next step.
9The article describes a device ............... measures air pollution in cities.
Wrong!
Use "which" to refer to a thing, here "the device".
10In the survey, the number of students who recycled ............... from 30% to 45%.
Wrong!
Use "increased" because the percentage went up from 30% to 45%.
11The diagram ............... how the human ear changes sound into signals.
Wrong!
Use "shows" because a diagram presents parts so readers can see and understand them.
12The author uses data from three studies as strong ............... for the claim.
Wrong!
Use "evidence" for facts or results that support a scientific idea.
Answers
- According to the article, the new battery can store energy for ten hours.
- The results look promising. However, the scientists say more tests are needed.
- The temperature rose by two degrees; therefore the ice melted faster.
- The chart shows that children drank less water compared with adults.
- The study suggests that sleep may affect memory.
- In the article, researchers carried out an experiment to test the effect of light on plants.
- The scientist explains, “This chemical slows the reaction.”
- Before they measured the samples, the team cleaned all the tools.
- The article describes a device which measures air pollution in cities.
- In the survey, the number of students who recycled increased from 30% to 45%.
- The diagram shows how the human ear changes sound into signals.
- The author uses data from three studies as strong evidence for the claim.

