1:to go.在这it做形式主语,to go there on time是真正的主语。
2:countries.“国家”
3.how does fit.这里very well 是表方式,用how 提问表方式
4。It isn’t hard to learn English well.要填的地方是主句,用it 做形式主语,后面的不定式是真正的主语。
1。 to go(是不是 difficult)?
2. countries
3. how does fit
4. It is not difficult to learn english well