这里该用their 还是its?learning and playing both has their/its advantages

这里该用their 还是its?learning and playing both has their/its advantages LEAR 填life还是lives?“wasting their own ＿＿（life）”这里该填什么,life还是lives?加了own用单数还是复数? There are five people in their parents ,their sister and ---这里用them/they这里用them还是they,为什么? everyone has their own _(way) of relaxing在这里way 用单数还是复数 用my,your,our,his,hemy,your,its,their造句 用my,your,our,his,hemy,your,its,their造句 用her our their its 各造2个句子 形容词性物主代词造句（its our your their)用 its our your their 造句不要一样的 the crowd rises to its feet 为什么用its 不用their Father told me fish ___ (sleep) with their eyes open.这一题该填什么?这里的fish是可数名词吗?是单数还是复数? 很多人的学业 这里study可不可数their study还是their studies (2/2)r nor 后面的be动词用单数,但是所有格呢?像这里应该填his 还是their? many people have been to the park （返回）with their friend 这里的返回用return 还是 returned? I hate it when they talk with their mouth full of foodmouth 这里是单数还是用复数 everyone have their own opion of……这里面的opion应该用复数形式还是单身? 英语句子求解释!The fishmen said that their small catches were enough to meet their needs and those of their families这里的meet 翻译起来好奇怪,该怎么翻译?为什么用meet? 主要是这里的due 该如何译呢,它是修饰elections还是 candidate呢?the ANC also reacted quickly saying Zuma remained its candidate for president in elections due in several months.