1.  Although it costs a lot of money.

2.  I used to be very weak and I could not bear the sports costing a lot of energy .

3.  But, we all know that going abroad costs a lot of money.

4.  It is not doubt that it would cost a lot of money to treat a terminally ill patient.

5.  More old people appear, who are prolonged painful lives by medical technique which cost a lot.

6.  Firstly, crimes cost a lot of lives.