The green toothbrush is mine.改为一般疑问句。is the green toothbrush mine?Can you help him find it？改为陈述句。you can help him find it选词填空do
play may
use
go
be
can1 （ ）I（ ）your bike ,Dam?may i use
Certainly,here you are.2（ ）you（ ）me a favour?can you do
Sure.3 Where is Sam,Yang?...
