5.
问答配对
⑴Are you crying?
A. No. My eyes
hurt.
⑵How
do we use wood?
B. We should plant trees.
⑶What
should we do to make the air clean?
C. It's on 12th March.
⑷When's
Tree Planting Day in China? D.
Because we need it to keep us alive.
⑸Why
is the air very important?
E. We use wood to make beds.