帮忙做道完型填空题!It is always interesting to visit another country,

帮忙做道完型填空题!
It is always interesting to visit another country,especially for those who have never traveled a great deal.Foreign __21__ can be very educational for anyone if he is interested enough to make preparations beforehand.Learning the language of the new country would be difficult for the traveler,__22__the benefits of such an effort would become obvious immediately __23__ his arrival.It may not seem important to him when he comfortably stays at home,but knowing how to __24__a meal or book a room is necessary for the newcomer in a strange country.Without knowing the language,it is very difficult __25__ the stranger to understand the people of the new country and their customs.
Of course,in our small world it is often possible to find someone __26__ understands our own,but this is only second-best for the traveler.To be sure,he can see places and things __27__ the use of a language,but places and things __28__ not the heart of any country.To get the greatest benefit from a trip__29__another country,it is how important for the visitor to __30__ an understanding of the language.
单选题
A.A.travel
B.B.country
C.C.language
D.D.people
单选题
A.A.when
B.B.so
C.C.and
D.D.but
单选题
A.A.on
B.B.before
C.C.while
D.D.at
单选题
A.A.buy
B.B.order
C.C.eat
D.D.book
单选题
A.A.of
B.B.to
C.C.for
D.D.in
单选题
A.A.who
B.B.where
C.C.which
D.D.whom
单选题
A.A.without
B.B.with
C.C.by
D.D.that
单选题
A.A.is
B.B.are
C.C.were
D.D.had
单选题
A.A.of
B.B.in
C.C.to
D.D.on
单选题
A.A.has
B.B.having
C.C.had
D.D.have