26．______life began on the earth is one of the biggest puzzles to scientists.
| A．How | B．What | C．Where | D．That |
You should learn from the others ___ you are.
| A．whatever | B．wherever | C．whenever | D．however |
Look! Serveal __ are watching a group of ___ eating grass on the hill.
| A．Germans…. sheep | B．Germans…sheeps | C．German….sheep | D．German…sheeps |
When she first arrived in China, she wondered what the future might havefor her, but now all her worries are gone.
| A． | in need | B． | in time | C． | in preparation | D． | in store |
As he works in a remote area, he visits his parents only ______.
| A．occasionally | B．anxiously | C．practically | D．urgently |
In those days, ourconcern was to provide people who were stopped by the snow storm with food and health care.
| A． | normal | B． | constant | C． | permanent | D． | primary |