Supply the correct forms or tenses of the verbs in brackets.

If you try to mix oil and water, the oil

(go) to the top and the water to the bottom.

Choose one word in A, B, C, or D to complete the following sentences.

Someone who is _______ is hopeful about the future or the success of something in particular.

Choose one word in A, B, C, or D to complete the following sentences.

The medical community continues to make progress in the fight against cancer.

Choose one word in A, B, C, or D to complete the following sentences.

Instead _____ petrol, cars will only run ____ solar energy and electricity.

Choose one word in A, B, C, or D to complete the following sentences.

He regretted________ killed and eaten several rare species.

Choose one word in A, B, C, or D to complete the following sentences.

The local authorities were blamed________ ignored the pollution issues in

the area.

Choose one word in A, B, C, or D to complete the following sentences.

Don't forget to write to me soon,_______?

Choose one word in A, B, C, or D to complete the following sentences.

Everyone's going to be there, _______?