The lesson drawn from the coal mine accidents is that safety measures are so important that we _____ take them too seriously.

It is suggested that a hard line ____ towards terrorists.

If he ______ it, he _______ it.

—— Could I use your telephone? —— Yes, of course you ＿＿＿＿＿＿＿＿＿＿＿＿＿. 

There is a possibility that these hens could be frightened and lay fewer eggs       a sudden loud noise.