Bob______nearly two hours doing his work yesterday.
| A．spent | B．took | C．paid | D．cost |
—Why is he feeling disappointed today?
—Because the suggestion hehas been turned down.
| A．put away | B．put up | C．put down | D．put forward |
What a mess！Tom，I have told you over and over again not to leave everything.
| A．in place | B．in the place | C．out of place | D．out of the place |
It shows that a knowledge of first aid can make a real.
| A．effect | B．effort | C．importance | D．difference |
The cool water stops the burning process，prevents the painunbearable and reduces swelling.
| A．become | B．became | C．becomes | D．becoming |
Burns are called first，second or third degree burns，which layers of the skin are burned.
| A．depending on | B．depended on | C．depend on | D．to depend on |