Never let your mind wander when driving, ______ a car crash is probable.

A.
but
B.
so
C.
because
D.
or

If I take this medicine twice a day, it should _______ my cold.

A.
heat
B.
cure
C.
treat
D.
help

The children ran away from the orchard(果园)________ they saw the guard.

A.
for the moment
B.
by the moment
C.
the moment
D.
at the moment

Before the game started Alien's friends believed he was _ but he didn't feel _. Then after the first ten minutes, he began to take heart.

A.
sure to win; sure to success
B.
sure of success; sure of it
C.
sure to win; sure about that
D.
sure about winning; sure to win

Air and the sun's rays create much distortion, and whatever tends to _____ their influence is useful to the astronomer.

A.
exclude
B.
eliminate
C.
extinguish
D.
impose

The library's study room is full of students _______ for the exam.

A.
busily prepared
B.
busy preparing
C.
busyly prepare
D.
are busily preparing

The ground is _ with _ leaves.

A.
covering, falling
B.
covered, falling
C.
covered, fallen
D.
covering, fallen

I am 17 years old now. I wish my parents wouldn’t treat me as if I _______ a child.

A.
was
B.
have been
C.
am
D.
were

He insisted that he _ the best, so he insisted that he _ the work all by himself.

A.
was; do
B.
be; do
C.
be; did
D.
had been; had done

Eating too much fat can______heart disease and cause high blood pressure.Which is wrong?

A.
bring about
B.
contribute to
C.
lead to
D.
result from

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