— Have you ever come here before?
— No. It is my first time that I to this city.
| A．have been | B．had been | C．came | D．come |
.In the United States, bus travel doesn't cost much as train travel, ?
| A．don't they | B．does it | C．do they | D．doesn't it |
is very clear to everyone that he's round and tall like a tree.
| A．This | B．What | C．That | D．It |
Many people now make a rule to buy cards for their friends before Christmas.
| A．themselves | B．it | C．that | D．this |
I think it a great honour to visit your country.
| A．to invite | B．inviting | C．having invited | D．to be invited |
It took us over an hour along the street.
| A．walk | B．to walk | C．walking | D．walked |