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—I think you’d better go out and get some _______ air.

A. bad B. thick C. fresh

A. heavily B. hardly C. nearly

A. are watching B. is watching C. watch D. watches

A. 56,711 B. 567,110 C. 5, 671 D. 5,671，110

—Always cloudy.

A. What B. Who C. Which D. How

【題目】Nobody could solve this difficult problem alone others’ help.
A.with
B.for
C.without
D.from

A. on B. over C. in D. under

—Because he had nothing to say.

A. tower B. silence C. wood D. order

—It rained ________ and I didn't take my umbrella.

A. completely B. suddenly

C. comfortably D. differently

—No，he is always friendly to others.

A. someone B. anyone C. everyone D. none