单项选择题The villagers have already known ______ we'll do is to build the bridge.
单项选择题The new librarian still doesn't know ______ the out of date newspapers and magazines.
单项选择题Bats are surprisingly long-lived creatures, some ______ a life span of around 20 years.
单项选择题What the correspondent sent us is an ______ news report. We can depend on it.
单项选择题People have always been()about exactly how life on earth began.
A.curious B.excited C.anxious D.careful