Leonardo da Vinci ________ birds kept in cages in order to have the pleasure of setting them free.
| A．is said to be buying | B．is said to have bought |
| C．had said to buy | D．has said to have bought |
The lack of health facilities and necessary protection for medical workers partly ______ the epidemic (蔓延) of Ebola.
| A．accounted for | B．headed for |
| C．called for | D．sent for |
Dozens of people were waiting with a camera for ______ seemed like hours, hoping to catch a glimpse of the US First Lady, Michelle Obama.
| A．that | B．when | C．which | D．what |
— Can I make an appointment with Dr. Smith this afternoon?
— Sorry, I’m afraid he is not ______ because he has a patient to operate on.
| A．convenient | B．available |
| C．accessible | D．valid |
The disaster relief funds are already ______ so that people in the earthquake-stricken area can carry out reconstruction work without delay.
| A．in place | B．in demand |
| C．in order | D．in vain |
The Adulthood Ceremony was held in the school lecture hall ______ seats approximately 500 students.
| A．where | B．whose | C．which | D．when |