We rushed to the football court, only to see a sign ________ into the ground reading PERIODIC MAINTENANCE (定期维修).
He is always ready to help others. That's one of his ________ .
-------Mrs. Green looks very worried. _______ -------The teacher called her and said her son was ill.
------ Our holiday cost a lot of money. ------ Did it? Well, that doesn’t matter ______ you enjoyed yourselves.
The question is too difficult and we found ________.
He had to speak in a loud voice in order to make himself_________.