It is reported that the sandstorm is moving _______ the south year after year.

er I think of my childhood, I’llalways feel that the period of free time seem to have passed ________

Both Hangzhou and Shanghai are _______ the east of China. Shanghai lies _______ the northeast of Hangzhou.

We have happiness, ____________ stillwe have trouble sometimes. That’s life.

The box is ____ heavy for me tocarry. Can you help me?——- Certainly.