----- Why is Mr . Yang still in the teachers’office ?---- Maybe he _______ his work yet .
----______, what are they saying? --- Sorry. I ________ nothing.
---Linda,There are a few mistakes in your homework.You can ___________ in your notebook. ---OK.
----Hi,Tony! What are you doing? ---- I’m sending ______ e-mail ______ my grandfather.
—Are you good at________English? —No, I’m good________my teachers.
—______do you like pandas? — ______they are cute.