Sentence Completion Exercise | Class 10 Grammar Worksheets

Fill in the blanks with an appropriate verb form, preposition or determiner. This grammar exercise is designed for students of classes 9 and 10.

Class 10 English Grammar Worksheet

India ……1…….. (take / took / has taken) a significant step towards developing a ballistic missile defence (BMD) system, ………2………… (when / then / as) an ‘interceptor’ missile ………3………… (kills / killed / had killed) a ‘hostile’ missile …………4…………. (of / off / out) the Orissa coast on December 6. Defense scientists ………..5………… (say / said / have said) the test validated the design of the endo-atmospheric layer of the two-tier BMD system ………..6……….. (been / being / be) developed by India. The aim is to have a BMD system capable ……….7……….. (of tracking / to track / of track) and destroying hostile missiles ………8………. (either / both / neither) inside (endo) and outside (exo) the earth’s atmosphere.

Solutions

India took a significant step towards developing a ballistic missile defence (BMD) system, when an ‘interceptor’ missile killed a ‘hostile’ missile off the Orissa coast on December 6. Defense scientists said the test validated the design of the endo-atmospheric layer of the two-tier BMD system being developed by India. The aim is to have a BMD system capable of tracking and destroying hostile missiles both inside (endo) and outside (exo) the earth’s atmosphere.

Gap fills exercise 2

Scores of scientists around the world ……..1………. (race / are racing / have raced) to turn algae into a commercially viable energy source. Some algae ………..2……….. (are / were / have / has) as much as 50% oil that can be converted into bio-diesel or jet fuel. The biggest challenge ………..3………. (is / has / was) cutting the cost of production. Researchers are also trying to figure out how ………..4……….. (grow / to grow / growing) enough of the right strains of algae and how to extract the oil most efficiently.

Solution

Scores of scientists around the world are racing to turn algae into a commercially viable energy source. Some algae are as much as 50% oil that can be converted into bio-diesel or jet fuel. The biggest challenge is cutting the cost of production. Researchers are also trying to figure out how to grow enough of the right strains of algae and how to extract the oil most efficiently.

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Manjusha Nambiar

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