It shows that a knowledge of first aid can make a real .
| A．effect | B．effort | C．importance | D．difference |
That is the only way we can imagine ________ the overuse of water in students’ bathrooms.
| A．reducing | B．to reduce | C．decreasing | D．to defeat |
Rose’s humor was________ make every student burst into_______.
| A．so amused as to…laughter | B．so amusing as to… laughter |
| C．such that…laughing | D．so that… laughing |
________twice, the postman refused to deliver our letters ______we chained our dog.
| A．Being bitten …unless | B．Bitten…unless |
| C．Having bitten…if | D．Being bitten…once |
I always ________you with your brother, for you look so______.
| A．mistake…alike | B．confuse … alike |
| C．puzzle… like | D．misunderstand…likely |
John ________the man _______ be set free.
| A．defended…referred | B．demanded… referred to |
| C．argued …referring to | D．reacted … referring |