(-x^2+4x+21)(2x^2+3x+5) >= 0

Conditinals

1.because the weather is warm and damp,rice grows very well here

2.I didn't have an umbrella with me,so i got wet

3.Our heating isn't working and I feel cold

4.I didn't go to school on time this morning because the bus was late

5.I couldn't get in touch because you didn't tell me where you were

6.You fell bad because you didn't apologize to her last night

7.In my opinion,you should go and see that film

8.Go to Britian and you will be able to speak English all day long

9.I used the dictionary.Otherwise,I wouldn't have known the answers

10.I could have visited my grandparents but I didn't have time