The house rent has been growing fast in cities. You have to pay nearly _______ than you did two years ago for a flat of the same size in some cities.

Where is Mr. Wu I haven’t seen him for several days.—He ________

I_______ laughing when my son made a face.

The Great Wall is __________ tourist attraction that millions of people pour in every year.

She had to _________in hospital ________she was better.