— How did you do in the test?
— Just ok. It ______ worse!
A. could have been B. could be C. would have been D. might be
Today scientists describe the universe ______ two basic partial theories—the general theory of relativity and quantum mechanics(量子理论).
A. in terms of B. in memory of C. in favor of D. in honor of
After years of wondering how the idle rich got even richer, we cracked the millionaire’s code, ______ secret is simple: Don’t spend a penny if you don’t have to.
A. which B. that C. whose D. what
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
