1.The __________ Lesson is very difficult but very important. You must learn it by heart.(twelve)
举一反三
- It’s very important for us to learn a lesson ____(from, to) failure.
- 人们认为，这个建议很重要。 A: People think that this suggestion is very important. B: This suggestion is considered very important. C: Many believe this suggestion important. D: This suggestion is very important for many people.
- ______ English well is very important. A: [A] Learn B: Learnt C: Learning
- You when you heard the news。 A: must be very excited B: must have been very excited C: can be very excited D: will have been very excited
- According to the text, it is very difficult to create a totally artificial heart for half a century. ( )