--- Would you like to visit the new museum with us this Sunday?--- ________, but I will have to work then.
-_____ you _____ your drawing? -Not yet. It will be done in a few minutes.
The teacher told us the earth ________ around the sun.
He’s been in China for two years. And he’s used to _______ in China.
_______ his help, we finished the work on time.
-_____ have you worked? -Since 2 pm.