آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 6839

The scientists believed that until that time most of the fossil fuels ......... in an unbelievable way.

School libraries can be a very useful and available .......... of information for the students.

Can you lend me some dollars? I have ...................... my salary before pay day.

If people use more warm water, they ………....………… to pay more .