Nowadays, a growing group of dieters are trying extreme calorie _____ for a long life by eating less food. 

It doesn’t make a(an)_______to me whether you go or stay.

The Committee had met many times, but had not come up with __________ to the problem.

After ___ absence, she found her hometown greatly changed.

If these trousers are too big, buy a smaller＿＿＿．