The patient will not recover unless he __________ an operation.
 

Choose the correct answer. "We should let children ________ electronic devices in class."

If you are in need of packing tape or labeling markers, you can get anything you need on the Internet, where people give things out..................free of charge, or from a neighbor who has recently

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

Ecologists are trying to preserve our environment for future generations by protecting the ozone layer, purifying the air, and have planted the trees that have been cut down.

Choose the best answer.

I ____ the police unless you ______

Choose the best answer:
The litter and ___________ from factories lead human’s lives into danger.

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

Henry David Thoreau was an American writer who is remembered for his faith in religious significance of the nature.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

My mother_____________her services for an environmental group. She helps raise money to protect wildlife.

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

It is difficult to write rules that tell exactly when we should apologize, and it is not difficult to learn how to do it.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

Half of the children were away from school last week because of____________of influenza.

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

The university administrations are introducing new measures to__________ that the enrolment process runs smoothly.

Choose the best answer from the four options given (A, B, C, or D) to complete each sentence:

There may be an _________problem that is causing your illness or making it worse.

Excuse me. Is this seat .................. ?

When he went home, his mother………………….. dinner, so he took off his coat to help her. 

Choose the best answer:
Sometimes when I hear the news, I feel very miserable.

_____  you like to see my stamp collection?

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

There is only a few food for dinner. I think you should buy some more to eat.

When the teacher or a student is speaking to the class, it is rude to begin whispering ______ another classmate. 

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Question 10: You’r_________ about the bush, Kathy! Just tell me exactly where you were last night.

Choose the correct answer. "I will learn spoken English _____ to abroad"

Choose the best answer from the four options given (A, B, C, or D) to complete each sentence:

Polar bears are in_________of dying out.__________some other endangered animals, it’s not hunters that are the problem, it’s climate change.