--Who______ it be that is knocking at the door?--It ______ be Father, but I’m not sure.
Mr Holmes called at many schools_________he lived to ask them to accept his son,but he was refused everywhere for being a black.
Hank lives in the southern part of London,_________is the capital of England.
The girl on the bus began to sing a pop song and soon all the others_________.
.The new building is_________to be completed before the end of this year.
—Waiter! —Yes? —Three_________,please.