【简答题】Mr. Black is registering at the hospital in person. Listen to the conversation and fill in the blanks with what you hear. Task 2.mp3: Mr. Black: Good morning. Nurse: Good morning. Sorry to have kept y...
【单选题】--Do you know Professor Yu, an outstanding expert in computers? --Exactly. But I _____ with him for about five years. A. have been in touch B. have lost touch C. have been out of touch D. ...