—Shall I help you carry your travel case to the train ,Granny? —Oh,no,my boy.It is heavy.Thank you anyway.
No matter how bright a talker you are, there are times when it’s better ______ silent.
We laugh at jokes, but seldom __________ about how they work.
There is ___________ as a free lunch.
He works as an engineer now, but he _____ on a farm for three years.
Wu Juping, ______ the most beautiful mother, is also popular with foreigners for her saving the baby _________ off the high building.