This is the man ____ gave me a book. （
| A．which | B．what | C．this | D．who |
As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.
| A．original | B．alternative | C．convenient | D．staple |
In the future, senior citizens will be able to go anywhere using high-tech cameras _______ to their head.
| A．attaching | B．attached | C．to attach | D．attaches |
As he works in a remote area, he visits his parents only ______.
| A．occasionally | B．anxiously | C．practically | D．urgently |
Don’t mention that at the beginning of the story, or it may _____ the shocking ending.
| A．give away | B．give out | C．give up | D．give in |
With two extra floors built, this hotel can ________ more people than before.
| A．appreciate | B．abandon | C．accommodate | D．approach |