She is very helpful and ready to help people ___________________.

There are ______ floors in the building and my home is on the ______ floor.

(2013·高考安徽卷)David is ________ animal fur，so he won’t visit anyone who has cats or dogs in the house.

It is generally considered unwise to give a child he or she wants. [ ]

In the spoken English of some areas in theUS, the “r” sounds at the end of the words___.[ ]