The engine () smoke and steam.
A.gives up
B.gives in
C.gives off
D.gives away
A.gives up
B.gives in
C.gives off
D.gives away
_____ there is smoke, there is fire.
A: If
B; When
C; Where
We do not permit ______ in the office, so we do not permit him ______ here.
A.to smoke; to smoke
B.smoking; to smoke
C.smoking; smoking
D.to smoke; smoking
______is forbidden in the meeting-room, but we are allowed in the room for smokers.
A. Smoking, smoking
B. Smoking, to smoke
C. To smoke, smoking
D. To smoke, to smoke
A.smoke
B.smoked
C.smoking
D.smoke
Which of the following is NOT tree according to the passage?
A.Some children start to smoke out of curiosity.
B.Many children start to smoke because they want to appear mature.
C.In order to have fewer children smokers, parents, teachers and health care workers should not smoke.
D.It is not as difficult to prevent children from starting to smoke as to persuade adults from smoking.
I used to smoke ______but I gave it up three years ago.
A.seriously
B.heavily
C.badly
D.severely
It is recommended that passengers______ smoke during the flight.
A.not
B.need not
C.could not
D.would not