Unless you …………………., I will explain it again to you.

They didn’t understand the matter; …………. , they didn’t ask for help

She is very tired; ................, she has to finish her homework.

Solar energy doesn’t cause ............. .

Choose the best answer to complete the sentences:

Can you ..............the light ? It's too dark to do homework .

Who ………….. your house when you are away from home .

 Indicate the word whose underlined part differs from the other three in pronunciation:

If the climate ..............., we will meet with natural disasters.

My teacher told me I was doing well; therefore, my final grade was bad.

Can you …………. the light? It is light enough to read a book.

I suggest to have a separate basket for newspaper.

She suggested ...........money for the poor people in our neighborhood .

If he ............... a student, he will get a discount.

How about ............... out for a change?