DÀNH CHO MỌI LỚP 6 ĐẾN 12

During our tour of the refinery it was seen that both propan

Nhận biết

Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

During our tour of the refinery, it was seen that both propane and gasoline were produced in large volumes.

of the refinery

it was seen

and

in large volumes.

I used to meet him occasionally onFifth Avenue.

Chi tiết
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.

Chi tiết
As children we were very close, but as we grew up we just drifted apart.

Chi tiết
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

Chi tiết
She decided to remain celibate and devote her life to helping the homeless and orphans.

Chi tiết
The workforce is generally accepted to have the best conditions in Europe.

Chi tiết
Many scientists agree that global warming poses great threats to all species on Earth.

Chi tiết
During the five-decade history the Asian Games have been advancing in all aspects.

Chi tiết
Population growth rates vary among regions and even among countries within the same region.

Chi tiết
I prefer to talk to people face to face rather than to talk on the phone.

Chi tiết