56、Is oxygen the only gas helps fire burn? ; x# V- b8 e' ]2 f' P1 } A.that B./ C.which D.what7 q9 C4 [; S- t! b
57、The first place we visited in that city was a big factory.( b8 z& ?3 J( M# [* a6 r# W) B- ~
A.where B.in which C.that D.which: d# L1 n2 q/ Y8 G5 I8 N6 Z" L
58、Which is the largest bridge was built across the river? / `2 |$ W9 b& W; i! x1 Z% x5 ^ A.that B.which C.where D.on which L& U/ [6 W& t4 { 59、Please pass me the dictionary cover is black.8 P: j* m3 v3 w" b' E' c
A.which B.its C.whose D.which of0 w' `' R) g$ }* c
60、 is natural, she goes abroad with her husband.1 n6 P) ~2 a r% H/ I0 m( Y7 h
A.It B.What C.Which D.As: K+ s0 K( g9 }. ^1 [& I
56、A 57、C 58、A 59、C 60、D