. Dream of the Red Chamber is _____ worth _____ because we can learn a lot about the noble families in the feudal society.

In the good care of the nurses, the boy is      recovering from his heart operation.

—Hi, I hear you’re going to London this summer vacation. —            , I was going to, but now I have changed my plan.

The plane got back to the airport and landed＿＿＿＿at last. 

My parents always remind me to make sure the electricity is turned off while I am having a bath, which would _____________ cause danger, leading to a dreadful consequence.