1 I paid a very high price

1 I paid a very high price ______this apartment .应该填什么 有固定搭配么
2 People have come to know that their health must ______A pay more attention B pay more attention to C be paid more attention D be paid more attention to 请问这种题有规律么 什么时候后面带介词 什么时候不带介词啊
3 While having a bath,he heard someone (was) singing.请问这里为什么不加was构成过去进行时 请问这种句型 有什么固定模式么
4 新概念二册第24课中一句话：In the struggle,the strap broke and,with the bag in their possession,这里and为什么放在这个位置,还有with起什么作用,什么词性 希望可以详细一些

1.for可以说是固定搭配2.d 有规律的,pay attention to是固定搭配,所以有介词,记住固定搭配就有介词3.hear sb. doing, 楼主记住这个词组就好了4.and在这里是连词,with是连词,连接两个从句