1 . 请选择合适词, 并用其恰当形式填空, 每个词仅用一次。

promise, foreign, approach, occur, communicate, launch, practice, assume, register

1. According to the witness, the car crash ________ two hours ago.
2. The manager announced that the company ________ a new plan to distribute free books to the children in remote areas.
3. Everything was ________ to me when I explored the city for the first time.
4. She made an effort not to ________ her anxiety to the child, but somehow the little boy still sensed it.
5. It is traditional ________ for all the Chinese to head back home and reunite with family during Spring Festival.
6. The newly developed medicine showed great _________ in preventing infection.
7. Many people _________ that they've done their best, but in fact they still have great potential.