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.
A smile can be observed, described, and reliably identify ; it can also be elicited and manipulated under experimental conditions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
She simply took it for granted that the check was good and did not ask him any questions about it.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
This is the second time you ______ your door key.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It is vital that everyone ______ aware of the protection of the environment.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
At first sight I met her, I was impressed with her ______ eyes.

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.
Some methods to prevent soil erosion are plowing parallel with the slope of hills, to plant trees on unproductive land, and rotating crops.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I love this painting of an old man. He has such a beautiful ______ smile.