A.am writing
B.wrote
C.write
D.have written
第2题
A.no time to write letters
B.little time to write letters
C.much time to write letters
第3题
A.business letters; formal letters
B.personal letters; business letters
C.formal letters; invitation letters
D.personal letters; formal letters
第5题
A.how many letters are
B.how many letters are there
C.how many there are letters
D.how many letters there are
第6题
A、A.Personal Letters
B、B. Social Letters
C、C. Notes
D、D. Business Letters.
第8题
A.business letter
B.business letters
C.businesses
D.businesses letters
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