__________ water resulted in the death of many aquatic animals.

 Excuse me. Can I _______in this area?

My mother has to measure blood __________ every month

Ha Long Bay is a beautiful spot _______ thousands of tourists visit every year

His eyes were so bad that he ... read the number on the board

 _____ their parents allowed them to go on a camping trip, they don't want to join it.

Choose the best answer to each question.

When the teacher asked Mary what the chemical formula was, her mind was a total ________.

Choose A, B, C, or D to complete the sentences.

I think the _____ leap beyond the next one will take us  to the stars.

Choose the correct answer to complete each sentence.

Tombs remain the most important monumental ______ of this period.

My father sometimes _______ the washing up after dinner.

Do you know what is the cause __________ pollution?

You are not allowed to camp here without ..........

_________ we were tired, we sat down beside the stream.

Choose the best answer to each question. 

________having a good salary, he also has a private income.

Choose A, B, C, or D to complete the sentences.

I've ____________ the product catalogue and decided to buy this table.

Complete the following sentences: _______ she changed a lot, we didn’t recognize her.

_______ you drive without driving license, you’re breaking the law.

Choose the best option:

He ________ to find a job but he had no luck.

__________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc.

Choose the best answer to each question. 

 So little ________ about mathematics that the lecture was completely beyond me.

Choose the best answer: 
Primary education in the United States is compulsory.