Switching to            eco light bulb is one way to protect the environment.

A. infection

B. infectiously

C. infectious

D. infect

A. houses

B. faces

C. horses

D. places

A. take in

B. give up

C. carry out

D. insist on

A. Mr. Baker is very interested in our plan to whom I spoke to on the phone last night

B. Mr. Baker, who is very interested in our plan, I spoke to on the phone last night

C. Mr. Baker, to whom I spoke on the phone last night, is very interested in our plan

D. Mr. Baker, who I spoke to on the phone last night, is very interested in our plan

A. around one out of five

B. less than a third

C. about 70%

D. well over 75%

A. are not popular everywhere

B. are universal expressions across cultures

C. have different meaning in different cultures

D. do not convey the same emotions in various cultures