In order to encourage the workers to work hard, the manager decides to award _______ produces the most in the factory.
| A．who | B．whom | C．whomever | D．whoever |
The elderly need special care in winter，as they are________to the sudden changes of weather.
| A．stubborn | B．generous | C．humorous | D．sensitive |
He told me that nobody else in the office had received an ___________to the party.
| A．invitation | B．bargain | C．shelter | D．guidance |
Her _________to the job left her with very little free time.
| A．relief | B．basis | C．devotion | D．faith |
I think at the beginning of each book a __________ introduction to it is necessary.
| A．wild | B．secure | C．swift | D．brief |
In _________to being used in industry，laser can be applied to operations in the hospital.
| A．devotion | B．addition | C．application | D．reception |