-----I haven’t seen Gina for a week.-----Oh! She _______ Mt. Huang with her friends. She ________there twice.A. has gone to; has gone B. has gone to; has been C. has been to; has been
Mark Twain ______ school and began to work at the age of twelve.
Jack usually goes to school by bike, ________ today he walked to school.
My English teacher ________ Mrs Lane now. She often helps me.
—________ did you start school?—I started school at five.
Robots ________ heavy work on farms in the future.