The __ of California grey whale is about sixty years.
Little creativity was seen in recruitment before.
The greater the population there is in a locality, _____________. (其对水、效能和垃圾处理的需求就会越大)
How much did the cost of paper increase between 1975 and 1990？ _______.
Mrs. Smith shut the windows lest________(外面的噪音会影响她儿子的睡眠)
Newspapers will continue to change, but as an effective means of distributing information, they______.