Prices of daily goods _____ through acomputer can be lower than store prices

re you practise ______ English, thebetter your _____ English will be.

The adoption of orphans and physically challengedchildren has been a subject of public debate _____ a fire in an unregisteredorphanage last month

下列各句中加点的成语使用恰当的一句是（3分）

It’s hot. Would you mind my _____the window—— _____.Do it as you like, please!