Question

Q3. Complete the following sentences using a simple past or present perfect tense form.

1. We ………………….. in Chennai when we were children.

a) lived

b) have lived

2. We …………………… anything from her since last week.

a) didn’t hear

b) haven’t heard

3. Rahul …………………… a few minutes ago.

a) has left

b) left

4. She ……………………. unemployed since last May.

a) has been

b) was

5. We ………………….. the contract last month.

a) signed

b) have signed.
6. The program …………………. yet.

a) hasn’t started

b) didn’t start

7. The boy …………………… absent since Monday.

a) was

b) has been

8. I …………………. the news last night.

a) heard

b) have heard

9. Somebody …………………….. the cat in.

a) let

b) has let

10. …………………….. to Australia?

a) Did you ever go

b) Have you even been

11. I can’t open the door because I ………………… the key.

a) lost

b) have lost

12. Nobody ………………… the door.

a) opened

b) has opened​

Answer 1

The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.

Answer 2

Explanation:

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