---English has a large vocabulary, hasn’t it?---Yes. _____ more words and expressions and you will find it easier to read and communicate.
I ______ along the road when I saw Peter. So we stopped and had a chat.
Betty will ring me up as soon as she ______ in Beijing.
The teacher requested that we ______ the classroom after using it.
The moment I met you, I ______ you though I hadn’t seen you for about ten years.
No one can imagine the difficulty he had ______ playing computer games.