e came back three hours later, theywere still ____on the sofa, _____ in conversation.

The weather turned out to be fine yesterday. I ______ the trouble to carry my umbrella with me.

If wea table earlier, we couldn’t be standing here in a queue.

Some Chinese students find it difficult to understand native speakers when in London.— Exactly, ____ they’ve learned a lot about grammar and known many words.

I’m sorry I know _____ about it. It’s a secret between them.