—Why not go camping this weekend? —_______.
He failed in the math test and looks sad.Let’s________.
The students are________the leaflets to people over there to ask them to protect our earth.
—Never________today’s work fill tomorrow.—Yes.It’s a good habit.
—Mum,where are my socks?—Under your bed.You should________your things.A.put onB.put downC.put away
China is going to________a manned space station around 2020 to explore more space.