It ________ be the vocabulary that caused you the problem in the exercise because you know a lot of words.
— The concert was wonderful yesterday. Didn’t you go to it?— _______. I _______, but I had to look after my sick baby at home.
The discovery of these tombs is _______ for scholars’ studying the history of the Tang Dynasty.
Life ____ be much happier if we ____ only be born at the age of 80 and gradually approach 18.
After floods had destroyed crops and houses, the farmers in the village were _____ food and shelter.
Never lose _____ heart. There is always a chance of _____ weak defeating _____ strong.