The human race is only one small species in the living world. Many ______ species exist on this planet.

A. "Romeo and Juliet" were written by Shakespeare in 1605.

B. "Romeo and Juliet" was written by Shakespeare in 1605.

C. "Romeo and Juliet" was written in 1605 by Shakespeare.

D. "Romeo and Juliet" were written in 1605 by Shakespeare.

A. protect

B. conserve

C. destroy

D. survive

A. Thousand

B. Thousands

C. Thousands of

D. Thousand of

A. unimportant

B. fundamental

C. unnecessary

D. not very necessary

A. seem

B. make

C. advise

D. let

A. offered

B. given

C. provided

D. distributed

A. The boy whose is called Duncan sits next to me in class.

B. The boy who sits next to me in class is called Duncan.

C. The boy whom sits next to me in class is called Duncan.

D. The boy to whom he sits next is called Duncan.