Recent campus tragedies show that safety measures are so important that we _______ take them too seriously.

Though the blacks in the United states have been fighting for equal rights ____ the whites for many years, they _____ won the battle[ ]

perfectly __________ to live in the mountainsand paint pictures all day, even though he is of poor health

The weather is too cold ____ March this year.——It was still ____ when I came here years ago.

The Ipad looks like ________ one I showed you last time, but if you take _______ second look, you will find it’s a different one.