Tom: "You've got a lovely singing voice, Mary."

Mary: " __________ "

The exam was less difficult than I expected.

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

Anne: "I think that's worth celebrating. Don't you agree, Charlie?"

Charlie: " __________ "

I won’t buy a robot toy until I have had enough money.

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

If we go on littering, the environment _________seriously polluted.

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.

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.