Lily is _______shorter than her sister.
It ______ me three hours to finish the work.
Finally, Mary made the baby ______ and the baby began to laugh.
---I’m sorry to keep you waiting.--- It doesn’t matter. I ____ here for only a few minutes.
I find ____ difficult to study English well, though I am still young.
When we meet our friends, we get ________about something and end up______ in Chinese.