She wrote me a vicious letter.
A. helpful B. gently C. dangerous D. healthy

My first impression of her was her impassive face
A. emotional B. respectful C. solid D. fractious

We left New York when I was six, so my recollections of it are rather faint.
A. explicable B. unintelligible C. clear D. ambiguous

Her thoughtless comments made him very angry.
A. honest B. kind C. pleasant D. thoughtful

She is a very generous old woman. She has given most of her wealth to a charity organization.
A. mean B. amicable C. kind D. hospitable

We'd better speed up if we want to get there in time.
A. slow down B. turn down C. put down D. lie down

A chronic lack of sleep may make us irritable and reduces our motivation to work.
A. uncomfortable B. responsive C. calm D. miserable

We are now a 24/7 society where shops and services must be available all hours.
A. an active society B. an inactive society
C. a physical society D. a working society

His replies were inconsistent with his previous testimony.
A. contradicted B. compatible C. enhanced D. incorporated

Solar energy is not only plentiful but also infinite.
A. without limit B. boundless C. limited D. indefinite