It’s _________ hard problem for the twins that ________ of them can work it out .

Linda make sure the table________before theguests arrive

I’m going to Europe on vacation together with John if I ________ find the money.(2012·全国Ⅱ)

Who is ________ the patient — Maybe his sister.

Not only I but also other workers____ willing to have a rest after a week’s work.[ ]