Early forms of life on Earth,____ in absence of oxygen, required other elements.

A. more than difference B. most different in

C more difference of D. the most different of

A. after B. to C. with D. of

A. to use B. for using

C. of using D. about using

A. to shape B. shaping

C. shape of D. shaped

A. Being made B. The making of

C. To make D. Made

A. the problem was discussed by the committee

B. the committee discussed the problem

C. it was discussed by the committee the problem

D. a discussion of the problem was discussed

A. where B. which C. in which D. what

A. took B. had taken C. take D. am taking

A. So did I. B. So I did. C. So were you. D. So did you.

A. That’s very nice of you. B. With pleasure.

C. You can, please D. Thank you for the tea.