【正文】
to f______a good habit. 答案: form 5. He a______a stamp to the envelope and mailed it. 答案: attached 6. She looks very ________(熟悉的 ), but I can39。t remember her name. 答案: familiar 7. Tom was so ________(幽默的 )that we had a lot of laughs together. 答案: humorous 8 . He is quite ________( 自信的 )that he will pass the examination. 答案: c