The lecture hall______ by Doctor Li in the 1980s can contain at most 6,000 people.
—How much do I owe you for lunch? —.It ' s nothing.
Correct the errors in the following sentences, if.
It was ________ fun to play on the beach that it attracted countless children.
He is a good cook at home and takes good care of the children, and _____his wife.
The system has been designed to give students quick and easy ________to the digital resources of the library.