______ students are required to take part in the boat race.
There was________much smoke________they couldn’t see across the hallway.
________what I had originally thought boring,the trip to Qingdao turned out to be fun.
________about the poor state of students’ physical fitness,the education ministry has urged local departments to increase spending on physical education.
________with the new machine,a search party went into the cave,hoping to find buried treasure.
It is________of you to turn down the radio while your sister is still in bed.