I help myself to something to eat— Of course, you are ______ to, you are our guest.

The students are _______ to know that elephants can walk quietly on tiptoe.

I hope my dream of swimming across theEnglish Channel will.

It has been proved _________eating vegetables in childhood helps to protect you against serious illnesses in later life.[ ]

She was so ________ in her job that she didn’t hear anybody knocking at the door