Researchers have invented _________ ears that look and act like the real ears, giving hope to patients missing all or part of their ears.
children believe they can succeed, they will never become totally independent.
—Do you like cooking, Sally?— .Luckily, I’ve never had to worry about it.
The achievements we have made are largely ___ the hard work of our parents and teachers.
— It is said that the cycling race around the Qinghai Lake was very hard. — So it was. Only a handful of cyclists made _______.
The workers wouldn’t run the _______ in letting an unreliable person take charge of the factory.