4. pervasive
A. to act in answer to
B. a single person, separate
C. set it up or connect it for use
D. existing everywhere
Choose the best answer according to its meaning.1. install
A. to act in answer to
B. set it up or connect it for use
C. suitable for use
D. beginning to develop
20. innovation
A. assistance given to those in special need
B. money provided for a particular purpose
C. the action of transforming, a new method or product
D. the action of transporting, a new path or way
19. pressing
A. needed to be handed in immediately
B. needed to be dressed up immediately
C. needed to be dealt with immediately
D. needed to be built up immediately
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