56、Is oxygen the only gas helps fire burn? 7 X& r9 V, l5 h0 r1 z. [) P A.that B./ C.which D.what/ d6 q0 e( C1 V* U
57、The first place we visited in that city was a big factory. l- V- A( `- u; Y
A.where B.in which C.that D.which2 ]$ W# a. t* c& U( v. S, ^
58、Which is the largest bridge was built across the river?7 E& g/ _0 D( q8 S
A.that B.which C.where D.on which+ Y; _: ]8 s- |8 i9 n
59、Please pass me the dictionary cover is black.. O$ C6 j% c* U" `! q) b5 I' U+ X$ T
A.which B.its C.whose D.which of. b+ {% V' Z* u8 j3 S
60、 is natural, she goes abroad with her husband.1 K3 A) a8 K) m' I2 u' [5 f
A.It B.What C.Which D.As * N/ C" B1 \" v& n; T" W56、A 57、C 58、A 59、C 60、D