【题目】But for the fact that I_ an unexpected visitor, I _____to the lecture．

【题目】More checkpoints were set up in the country to ensure residents could be ________ for the virus.

【题目】The____of hanging clothes across the street is a common sight in many parts of the city.

【题目】I lost the key to my dormitory. Could you ____ for the night?

【题目】Rick has always ____________ foreign language. He is a genius in language.

【题目】The two top students in Mr. Green’s class competed _____ each other for the highest marks.

【题目】Claire knew that Gladys thought she was having an .

【题目】Please call me before you buy a new camera so I can go with you.

【题目】Among the children ________ by the rich couple ________ a clever boy called Tom.

【题目】If ________ for an explanation for an advanced camera, I would certainly find it difficult.