The woman’s illness ________ all the doctors in this hospital; they couldn’t find the cause.[ ]

Americans _________ their meals with knives and forks.

What did our geography teacher say—She told us that the earth _____ aroundthe sun.

When the cinema open—It from 9:30 a.m. to 9:30 p.m.

Listen! I hear some birds ___________ thetree.