We'll learn much from this failure, so our suffering and efforts are not ________.

The girl _____ to be a good dancer if she is well trained in an art school.

He is the first person you can think of to rely on, for he is always willing to ________ whoever is in trouble.

The boy is good ___ learning English and he does well ___ it.

Apple_____ to intense pressure from Chinese state media about its customer service practices, apologising to consumers in its second-largest market.