Perseveranceisakindofqualityandthatis_______ittakestodoanythingwell.
A、whatA
what 在表语从句中作 takes 的宾语 ,构成 "It takes sth. to do sth." 的句型。答案为 A。
Ittookafewsecondsforhereyesto________tothedarkness.
He________hispoorjudgment________JetLag.
Washing the food down with water as a substitute ________ chewing is not a good habit
—Davidhasmadegreatprogressrecently.—_______，and_______.
Moderneconomics________thecountry’sagriculturalpolicies.
