_____, the environment of our city has been greatly improved.
A. Paid attention to B. Being paid attention to
C. Paying attention D. Having paid attention
Never are we allowed to pursue our economic development______ destroying the environment.
A.at the risk of B.at the cost of
C. at the end of D. at the mercy of
The war and sufferings it caused by the war seventy years ago are the old woman’s ______memories, which can never be forgotten.
A. poor B. current C. vague D. permanent
When he kept silent, Mr Johnson ______ his approval for our plan.
A. would show B. is showing
C. was showing D. has shown
Digital teaching has ______ our way of learning and excited us to focus in class.
A. guaranteed B. revealed
C. evaluated D. transformed
—What did Jack demand at the meeting just now?
—______ a chance to join the Debating Club.
A. Being offered B. Having been offered
C. To be offered D. To have been offered
