Fill in the Blanks PRESENT PERFECT - VERB FORMOnline version NHÌN DẤU ĐỂ XÁC ĐỊNH CÂU KHẲNG ĐỊNH, PHỦ ĐỊNH .... ĐIỀN HÌNH THỨC ĐỘNG TỪ THÍCH HỢP, by Le Jenny 1 1 . I ( + / be ) to Singapore . 2 . He ( - / change ) his residence . 3 . Steven ( - / finish ) his homework yet . 4 . I ( + / be ) to England three times . 5 . She has never ( travel ) by train alone . 6 . Alice ( + / study ) two foreign languages . 7 . You ( + / grow ) taller since the last time I saw you . 8 . I have never ( be ) to Singapore . 9 . Bill still ( - / arrive ) . 10 . The government ( + / become ) more interested in Science and Math education .