Pollution has already destroyed much of the Earth. Only by changing ______ we live can we save our planet.
A. where B. how C. what D. why
The Hong Kong–Zhuhai–Macau Bridge (HZMB), is a 55-kilometre bridge–tunnel system ______ of cable-stayed bridges, an undersea tunnel, and four artificial islands.
A. consisted B. having consisted C. consisting D. being consisted
Give specific suggestions when you criticize others’ work. ______ comments do not help them improve.
A. Apparent B. Vague C. Concrete D. Various
The frequency of airline crashes is basically ______, but they do sometimes come in bunches.
A. random B. alarming C. countless D. steady
The great contributors in life are those who, ______ afraid of the knock at the door, still answer it.
A. if B. since C. though D. unless
When the coach was arrested for drunken driving, the students realized that their hero had ______.
A. cold feet B. his finger in every pie
C. feet of clay D. the wisdom of Solomon
