35. more information ,write to the address below.
A.To B.On C.From D.For
34.If you the right map , we wouldn’t have got lost.
A.have bought B.bought C.had bought D.would buy
33.-Which umbrella can I take?
-You can take of them; I will use none.
A.both B.any C.either D.each
32.Living in the desert involves a lot of problems, water shortage is the worst.
A.of which B.when C.of whose D.Which
31.Only when you have obtained enough data come to a sound conclusion.
A.can you B.you can C.would you D.you would