we can’t remove our troubles in life forever, we can leave them behind when we are on vocation.
| A．When | B．While | C．Unless | D．Until |
.
---How do you find your visit to the zoo?
---________
| A．Oh, wonderful. | B．I went there by myself. |
| C．By bus. | D．A guide helped me. |
.
On the wall _______ two large maps.
| A．hang | B．hangs | C．are hanged | D．is hung |
.
Don’t you think it _______ that the new technique should be spread to more areas?
| A．violent | B．concerned | C．serious | D．urgent |
.
The growing speed of a plant is influenced by a number of conditions, _______are beyond our control.
| A．most of them | B．most of which | C．most of what | D．most of that |
.
The top leaders of the two states are holding a meeting in a friendly _______.
| A．atmosphere | B．condition | C．position | D．situation |