【题目】It was quite ________ to let Peter pay for everything during the trip. (fair)

【题目】Something ________ (mention) about the special campaigns against crime(扫黑除恶运动) at yesterday’s meeting.

【题目】Nancy is an early bird. It was ________ (usual) for her to be late for school this morning.

【题目】—How much difficulty did you have ________ (solve) the problem?

【题目】The clerk in the bank was ________, she often gave the old some useful information. (help)

【题目】We know that it was a very hard ________, but we feel we made the right one. (decide)

【题目】The exciting news was ________ spread throughout the country. (wide)

【题目】It must be tiring to walk to the ________ floor. Why not take the lift instead? (twelve)

【题目】I met an old friend of ________ (they) in Jiangyan Museum last Sunday.

【题目】________ (fight) the virus, China has devoted great efforts to vaccine research and development(疫苗研发).