【题目】Other countries might have different opinions about table manners ________ on different customs.

【题目】How many times have you picked something you wanted，only ，sadly，that you really didn’t know what to do with it?

【题目】We have no idea what air we will be breathing in the future if we anything to stop hazy weather.

【题目】Youth is a period of our life we see no limit to our hopes and wishes.

【题目】We are always educated to treasure the present moment，because gone，things will never come back again.

【题目】He is one of those people _____ everybody will find _____ hard to please.

【题目】The man was disbelieved ______ evidence came to light _______ he was trapped by the murderers.

【题目】Located ____ the Belt meets the Road, Jiangsu will contribute more to the Belt and Road construction.

【题目】I truly believe _____ beauty comes from within.