People say your little brother has been admitted into QinghuaUniversity.—Yes. Never ________ he could achieve so much success.
Do you know ______ this i-pad belongs to? —Let me see. Oh, it’s ______.
You ______ be polite to the old man.
Which of the two subjects do you like, art or music?—-______.They are really interesting.
In the United States, Father’s Day falls on _______ third Sunday in _________ June.