It sounds like something is wrong with the car’s engine.______, we’d better take it to the garage immediately.
| A．Otherwise | B．If not |
| C．But for that | D．If so |
Education should not be restricted to any ________ age group.
| A．particular |
| B．special |
| C．unusual |
| D．specific |
The young surgeon________his first operation successfully.
| A．made |
| B．exercised |
| C．carried |
| D．performed |
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 |
You are not stupid________you are slow in study.You shouldn’t give up your studies.
| A．even though |
| B．when |
| C．while |
| D．whether |
________ is now no ________ that global warming is a security threat to us all.
| A．There；doubt |
| B．There；need |
| C．It；doubt |
| D．It；need |