Did your father come back early last night?—Yes. It was not yet eight o’clock _______ he arrived home.

Hi, David! How was your trip to Beijing?— Wonderful! I had never had ________ holiday in my life.[ ]

________ exciting the movie is!—Sure, I have seen it three times.

This is ____eraser and that’s ___ key.

Elephants eat________, but theycan move _______when necessary.