基本信息
period four grammar & writing ⅰ.用所给词的适当形式填空 1．many new houses ________________________(build) in the past few years. 2．so far no letter ________________________(receive) from my friends. 3．the room ________ already ________________(clean)，hasn’t it? 4．much useful information about planets ________________________(collect) since 1971. 5．the temple ________________________ (repair) since last year. 6．________ the book ________________ (publish) yet?
