Whentheshiplostitsenginepower,thecrewfoundthemselvesatthe_________ofthewind.

I_____him150dollarsandmustpayhimbacktomorrow.

It’s___(reasonable)to expect people to work more than 60 hours a week.

If you have difficulty locating a particular book ，please ask our librarians for___(assist).

Ifyouareunabletocometotheinterview,for______reasonyoushouldinformusaheadoftime.