The greatest ______ between fresh water and seawater lies in its concentration of salt

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions

That is a well-behaved boy whose behavior has nothing to complain about

How are you ______ on with your work?- It is OK

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

Among (A) many other program, (B) UNICEF also (C) supports (D) the international Child Rights Information Network

My student practices ______ English with her friends every day

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

In 2030, (A) how we will provide (B) for the food, land, and energy needs  (C) of a global population of over 8 billion? (D)

Not until darkness fell ______ he hadn’t done half of his work

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) or phrase(s) SIMILAR in meaning to the underlined word(s) in each of the following questions.

Although the government has taken certain measures to protect elephants, numerous threats remain for them