完成对话。 ALLEN: Hello. HAN TING: Hello. This is Han Ting. May I speak to Allen, please? ALLEN: 1 _______ . HAN TING: Hi, Allen. How are you? ALLEN: Fine, thanks. And you? HAN TING: I'm fine. Thank you.Allen, I need some help.2 _______ ? ALLEN: Sure. 3 _______ ? HAN TING: 4____with my computer.5_______mend it? ALLEN: Certainly. 6_______.7_______Sunday afternoon? HAN TING: OK. Thanks a lot. 8_______.