This is（）“f”. It’s in “life” 不是说名词前为什么有this、that等代词时不用冠词吗? 而且这里为什么还用an这个冠词.

（）is this bike It’s （）. I mean,this is where it's going to start This is a miracle I know it's crazy 填代词 --------is this red dress?I think it's-----------. I think this work is very easy,it （f ）me括号里填什么? Is this （代词填空）watch?（you）No,it's not （代词填空）.( I ) This shirt‘s is very small,I can’t wear it.a：This shirt is（ ）（ ）for me（ ）wear b：This shirt is（ ）small （ ）I （ ）it c：This shirt is not（ )( )for me to wear d:I can'wear this shirt ( )it is( )( ) e:This shirt is very s 1.It's quite dangerous to (f )the fast car on the road1.It's quite dangerous to (f )the fast car on the road.2.My brother isn't at home now.Can I take a （m 3.The time is too short,it's （i ）for me to finish this work before Monday.4.Lily （f a：（）wallet is this?b：It,s（）.I（） for it just nowa：（）wallet is this?b：It,s（）. I（） for it just now. thank you（）（）.（）welcome.地上是男士钱包 it's an elephant.it has( )small eyes .( )whale is this?( )mine.i like it. What's this?It's letter P.what___is it?It's green.white.what's this letter?It's sletter N.It's red.P-E-N.is it''____''?Yes,it is.I have__blue pen .it's____to 根据首字母补全单词：Is this (y ）jacket,John?No,(i ) isn't.My jacket is new,but this jacket is (o ).I think this is Peter's (j ).No,it's not my jacket.My jacket is blue.This jacket is (b ).(W ) jacket is this?Oh,it's my jacket.(T ) you. Is this new skirt Jenny's Yes,it's （）. 填空：This is mother's dress,It is（ ）. Hi Mike This is Tom It's s() today S() we go and p() f() this a() Jenny ,_______Mr.Zhang .A.it's B.this's C.it .D.this is（为什么） （Where）Who is that man over ------?（thank）I------it's mine.（that）—------it this?—it's apencil 排列下面的句子（ ）Is it a key?( ) You are right.( )What's this in English?( )I think it's a ruler.（ ）No,it isn't.