There are many (different) between the twins. One is shy, but the other is outgoing.
We are (excite) to see that Chinese vaccines (疫苗) are used around the world now.
Each of (we) should study hard and do something for our country.
The list of winners will (put) up on the school website.
I accepted an (invite) to the party from my friend.
The teacher speaks (high) of him for his hard work.