General Grammar Exercise for Class 9 CBSE

Fill in the blanks with an appropriate word or phrase.

Scientists ……….1…………… that the rise in global temperatures that …………2………… detected over the past two decades cannot be blamed ………3……….. the sun. The researchers looked …………4………… data for radiation from the sun, levels of which can cool or warm our planet’s atmosphere. The team said that the sun has been less active ………….5………… 1985, even though global temperatures have continued to rise. This study has further ……….6………… the belief that human activity is to blame for the …………7………… in global temperatures.

1. a) concluded; b) had concluded; c) have concluded; d) were concluding

2. a) was; b) has been; c) had been; d) is

3. a) to; b) on; c) in; d) against

4. a) at; b) for; c) on; d) in

5. a) for; b) since; c) from; d) to

6. a) reinforce; b) reinforces; c) reinforced; d) reinforcing

7. a) rise; b) raise; c) rose; d) risen

Answers

Scientists have concluded that the rise in global temperatures that has been detected over the past two decades cannot be blamed on the sun. The researchers looked at data for radiation from the sun, levels of which can cool or warm our planet’s atmosphere. The team said that the sun has been less active since 1985, even though global temperatures have continued to rise. This study has further reinforced the belief that human activity is to blame for the rise in global temperatures.