— Mr. Smith was really helpful when you were in financial difficulty during those years.— Definitely. I can never appreciate his kindness ________.
________matters most in learning English is enough practice.
Peter’s jacket looked just the same as Jack’s,but it cost________his.
They ______ the train until it disappeared in the distance.
—I’ve got a headache again! —Sorry to hear that. Walk to work every day and you’ll soon back in ______.
The patient's son asked the doctor the question________his father could survive the big operation.