who ( )your best friends?A.was B.were C.is D.isn't 使用单数还是复数?
who ( )your best friends?A.was B.were C.is D.isn't 使用单数还是复数?
your watch is very nice()?A no is isn't B yes C thank you D
is your best friend really ill?A:no,he isn't B:i hope soC:ye
Is Bob your brother?A.no,it isn't.B.no,he isn't.C.no,she isn
Who isn't your sister and isn't your brother is still a chil
Who isn't your sister and isn't your brother,but is still a
It isn’t().a.your b.you c.yours d.your's e.you's
I remember they----here yesterday.A.was.B.weren't.C.isn't.D.
When( )your Birthday?A.was B.were C.is 最好还能给我解释一下,
Was it bill,who is one of your best friends,that played the
who do you think ( )in your school?a.is the best teacher b.t
Isn't your uncle an engineer?A No,he isn't B No,he is C Yes,