Jack’s parents can’t go to the parents’ meeting because they ________ to Beijing on business.
---Tom, did you go to Sally’s party yesterday evening? ----No, because I _________.
The foreigners find _____difficult to learn Chinese well.
Our English teacher is very popular among students because he always keeps his classes _____.
_______everyone else brings a gift to the party?
Bad luck! I tried many times but _______again this time.