They’ve got two machines, but ________ works well.

（湖南省怀化市2014年高三第二次模拟考试）22Tom, you play the violin so wellBut I ______ you can play the violin

They want to make more cars with ____ workers and ____money.I think it’s impossible.

It’ s dangerous to climb the mountains or hills _____ cold and snowy days.

_____ in a poor family made Jack very hardworking when he was still young.