It is his nervousness that probably cost him his job这个是主语从句吗?probably cost him his job不是缺主语的吗?还是强调句?强调句可以缺成分吗?

is it ()for his eyes ________toy monkey is it?Its his. Is it his dictionary?变成复数形式. It is his pen(改为一般疑问句) Is it his,aiso.改病句 It is his backpack改否定句 is,it,ruler,his连词成句 It is his book.改为否定句. when it is his turn?意思 It is hard ___ his strange idea. For it is his motto中文 It is his drum.问句是什么 it is his pen改为肯定句 -----（ ） （ ） （ ） ----It is his drum. it is his last time ____(visit) his eacher （ ）toy monkey is it?It's his. Whose car is it It belongs to his.英语改错 not,it,her,is,car,it's his 造句