elearn site

 
English 10: Unit 15: Cities
Activity:

Choose the best answer for the following sentences:


1. A loud speaker is an instrument ............... electrical energy into sound energy.
A. transformed
B. who sis transforming
C. which transforms
D. that is transformed
Explain:


2. Although there is a lot of ............... in Los Angeles, it is an ideal place to live.
A. pollution
B. polluted
C. polluting
D. pollute
Explain:


3. I have read a number of articles, ............... are very useful.
A. most of them
B. most of whom
C.