How long has this been going on?
举一反三
- How long has this been going on? _____1_____.
- —How long has Eliza been a nurse?—______
- How long has the magazine been on sale How long has the magazine been on sale A: for one year B: for eighteen months C: for two years
- — How long has this bookshop been in business? — ____________ 1982.
- How long has John Adams been in the college?