ited States signed up on Friday forthe 2010 Shanghai World Expo, _________ it the last major country to join theevent．

Can we get everything ready by the weekend?— It all depends on we can get Mr Green’s cooperation.

He with his parents ____ to Shanghai once a year.

– Did you enjoy the book?— Yes, it was so interesting that I couldn’t _____ it.

We were all missing you at the party!— SorryI was busy with my project researchOtherwise, I ___________ it