I lost contact with my family and friends since I lost my mobile phone.
A.lost control of
B.made room for
C.got in touch with
D.put in charge of

Many animals are being endangered by human activities such as the burning of coal and charcoal for heating and cooking.
A.at risk
B.defended
C.hazardous
D.varied

I talked with her in a chance meeting last month.
A.unplanned
B.deliberate
C.accidental
D.unintentional

The names of the participants in the survey were changed to preserve anonymity.
A.cover
B.conserve
C.presume
D.reveal

The couple tried to converse in the busy restaurant, but they couldn't hear themselves speak so they went elsewhere.
A.talk
B.stop talking
C.chat
D.communicate

At the managers' meeting, the group decided against the new project as a viable option and decided on another direction to ensure success for the company's fall line.
A.impractical
B.feasible
C.practical
D.positive

The inhospitable climate in a desert makes it impossible for most animals and plants to survive.
A.rainy
B.stormy
C.hostile
D.intense

The teacher gave some suggestions on what could come out for the examination.
A.effects
B.symptoms
C.hints
D.demonstration

Roget's Thesaurus, a collection of English words and phrases, was originally arranged by the ideas they express rather than by alphabetical order.
A.restricted
B.as well as
C.unless
D.instead of

During the earthquake, a lot of buildings collapsed, which killed thousands of people.
A.went off accidentally
B.fell down unexpectedly
C.exploded sudenly
D.erupted violently