The time he has devoted in the past 10 years____ the disabled is now considered ____ of great value.[ ]

I often go to the English corner to have a free talk with my classmates ________I am busy[ ]

You’re so tiredWe should have driven the car _____

Shanghai is bigger than in Jiangsu and it’s also a very beautiful city.

He has made a promise that _____ the cost, he will buy the house not far away from the beach[ ]