It is typical of students to stay up ________ deep into the night for the final exam.

An underwater hotel has opened in Africa，with its rooms＿on the bottom of a three－level floating building．

Feng Xiaogang，＿＿＿＿＿＿＿＿＿by many as a leading director，left his handprint at the TCL Chinese Theatre．

You can't imagine what great trouble I had _______ his address.

_____ according to the instructions, the robot can behave like a human being with average IQ.

I wondered what difficulty he had _____ the plan.

_______ confidence and patience, they failed to settle the difficult problem.

He was close to______ in the accident.

They wanted the house at the foot of the mountain ________ in a way to look pretty.

---- How did you know the surprising news?                
---- I happened ____ the event then.