________ becoming extinct is of great concern to zoologists. 

Mr Pike _________ English at our school for 20 years before he retired last year.

It is important that he _______ a gallon of water with him if he wants to hike to the bottom of the Grand Canyon. 

She built a high wall around her garden ________. 

“These beers are ___________!” whispered the grinning tenant to his customers on Sunday

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.

The General Certificate of Secondary Education (GCSE) is the name of a set of Vietnamese qualifications, generally taking by secondary students at the age of 17–18 in Viet Nam.

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of following exchanges.

Two friends Mai and Hoa are talking about their upcoming exams.

Mai: “Our monthly tests will start next Saturday, are you ready?” – Hoa: “________”