You never know _______ you try something.

Basketball is so exciting that ______ people play it for fun.

Can I look at the menu for a few more minutes beforeI decide— Of course. ____, sir.

Oil prices have risen by 32 percent since the start of the year, __________a record US$ 57. 65 a barrel on April 4.[ ]

He is a swimmer,and he swims very _____________ .