US Apple decided to expand its business in China in response to an increasing demand ______ digital product.
A. of B. from C. to D. for
We are confident that the step the Chinese government has taken to cope with the current crisis is ______ of great significance.
A. what B. those C. that D. one
I witnessed the gate of the bank _______ open and many men entering it, but I couldn’t make them out in the darkness.
A. force B. be forced C. forcing D. being forced
— I didn’t care about what other people thought about me.
— Well, you ________.
A. should B. ought to have C. would have D. could
As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
A. it B. what C. which D. that
These teenagers don’t know much of the world yet; that’s why they are so easily _____.
A. taken in B. taken up C. taken on D. taken off
