He suggested the problem worth paying attention ______ at the meeting.

 Robert wishes that he ________ business instead of history when he was in university. 

The World Wide Web is sometimes jokingly called the World Wide Wait because it ________ be very slow.   

If it _______ next week , the crops would be saved.

—Johnson，come and look at the sea！It's beautiful，isn't it?—Absolutely！If only I ______here by the sea.