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

If you don't work harder, you _______ successful.

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

The teacher ______ me that I had to prepare for the examination carefully.

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

The Smiths usually go out for dinner_______ Sundays.

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

For Vietnamese people, Tet or Lunar New Year holiday is the most important _______.

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

If Mary _____ here now, she would help me to solve this problem.  

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

I think this test is_______ than the one we did last month.

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

Jack found an old coin while he _______.