Where is your mother —She _______ the supermarket to buy some food.

Many experts hold the view teacher’s development is the key to better education lies.

________ it is to go for a picnic on such a fine day!

If you happen to get lost in the wild, you’d better stay ______ you are and wait for help.

Mum, would you please buy me a MP5 player?– If you can help do the dishes the whole vacation，you________have one as a reward·