The (a ) where they live have many problem with pollution.

The (a ) where they live have many problem with pollution. A asked her FRIENDS（ ）DURING THE THREE-DAY HOLIDAYWHERE THEY HAD BEEN? WHERE HAD THEY BEEN? WHERE THEY HAD GONE?WHERE HAD THEY GONE?WHY? (A.Where's.B.Where're.C.Where.D.There are)your photos?they are on the desk where are_students?they are in_school library A)the,the B)/,the C)/,a D)/,/ 10.________,work songs often exhibit the song culture of a people in a fundamental form.A.They occur where they are B.Occurring where　　C.Where they occur D.Where do they occur为什么选他 Where are () quilts?They are on the sofa.A.they B.our 选哪个 为什么? This is the hotel___last mouth A.which they stayed B.at that they stayed C.where they stayedat D.where they stayed Peter says that the Whites are on holiday, but no one knows .A. where they have been B. where are they C. where are they from D. where they have gone — the keys?___ on the bed.A、Where is ,It's B、Where are ,They're — the keys?___ on the bed.A、Where is ,It's B、Where are ,They're A:Where ---(be) the chlidren?B:Look,they ---(be) over there .A What --- they ---they---(do) thereB:They ---(listen)to the CDs. They went to the bookstore ( )bought lots of books.A.where B.to C.where they D.which they我想问为什么不是D stay是及物动词吗This is the hotel ______last month?A.which they stayed B,where they stayed at C.where they stayed Where are the children?They are having a good time in the garden. the glasses are in the red box now where were they a moment ago where's the tape?is( )on the desk?a.it b.that c.this d.they Where are the students?They are in the(A.sport.B.sports.C.sporting.)hall. 选择题： ( )Where are the girls? They are _______ the hall. A.at B.to C.in