--- I think the waiter has forgotten us. We ________ here for over half an hour! --- I think you’re right. He probably thinks we have already ordered.
Not until liberation _ he __free.
Shanghai is larger than __ in China.
They are in high spirits.They ___ have been defeated in the game.
Much of his spare time __ learning how to fix radios.
All the teacher taught at the last lesson seemed easy __. A, to be understood B. to understand C. being understood D. understanding