Recently a survey ______ prices of the same goods in two different supermarkets has caused heated debate among citizens.
| A．compared |
| B．comparing |
| C．compares |
| D．being compared |
Writing in your diary every day is _____ good habit, which can help you make _____ progress in writing.
| A．a, / | B．a, a | C．/, / | D．/, a |
In zones where earthquakes are known to occur, ______ construction techniques can significantly reduce the effects of seismic wave.
| A．to improve | B．improving | C．improved | D．being improving |
Small ______ you are called early bird --- you always catch the first train to work!
| A．wonder | B．case | C．surprise | D．shock |
Can it be ______ in a fast-changing world we don’t know what to teach our children today?
| A．which | B．that | C．why | D．since |
Teach children ______ electrical appliances, cords, and switches are not toys.
| A．what | B．which | C．how | D．that |