Nowadays when tourists pay a visit to Xi’an, _______ for them to take public transport.
A.there is very convenient
B.it is very convenient
C.there is very conveniently
D.it is very conveniently
网友回答
B解析考查固定句型。It is convenient for sb. to do sth.做某事对某人来说是方便的。it为形式主语，真正的主语为不定式。