1. Edison and Einstein are both great _____________ (科学家).
2. Mr. White has just had his ______________ (四十九) birthday.
3. Take more exercise and you'll be _____________ (健康).
4. Mike _____________ (试穿) the blue jacket and it fitted very well.
5. Our English teacher often tells us _____________ (不要放弃) English though it is difficult.