you eat the correct foods be able to keep fit and stay healthy
| A．Only if；will you | B．Only if；you will |
| C．Unless; will you | D．Unless; you will |
—I apologize for not being able to join you for dinner.
—________.We’ll get together later.
| A．Go ahead | B．Not to worry |
| C．That’s right | D．Don’t mention it |
A new_____bus service to Tianjin Airport started to operate two months ago.
| A．normal | B．usual | C．regular | D．common |
It is difficult for us to learn a lesson in life_____we’ve actually had that lesson.
| A．until | B．after | C．since | D．when |
Lucy has_____all of the goals she set for herself in high school and is ready for new challenges at university.
| A．acquired | B．finished | C．concluded | D．achieved |
Hardly could he_____this amount of work in such a short time.
| A．get through | B．get off | C．get into | D．get down |