The number 9.11 is special number, , I think, that will be remembered by the Americans forever.
—The English exam is not difficult, is it? —______. Even Tom ______ to the top students failed in it.
----Go for a picnic this weekend, OK? ---- ______. I love getting close to nature.
The villagers, _________ had been damaged by the flood, were given help by the Red Cross.
It seems you need to apologize quickly ______ a good friend.
—What’s up? You look down. —I have piles of papers ______, but I type so slowly.