Bob has learned a lot from his _______ of working in different gyms and is now an expert on all kinds of _______.
| A．experience; equipment | B．experience; equipments |
| C．experiences; equipment | D．experiences; equipments |
______ in his book, he didn’t notice me when I entered the room.
| A．Devoted | B．Absorbed | C．Absorbing | D．Devoting |
The door is low, so ______ your head when you go in.
| A．attend | B．guard | C．protect | D．mind |
—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 |