Would you like to come to the party here on Saturday? — I’d love to, but my father insisted that I _____ to see my grandparents at the weekend.[ ]

．It iswell known that the Internet will let people have __________ to huge amounts ofinformation from their own homes.

He knew the problem was serious and promised to look into it ____ he reached office[ ]

It was the second time that we ________ in holding such important parties.

_________ do you think he solved the problem in such a short time— With Mr. Li’s help.