It is politely requested by the hotel manager that radios __________ after 11 o'clock at night.
| A．were not played |
| B．not be played |
| C．not to play |
| D．did not play |
cheese
| A．radios | B．aside | C．adjust | D．diverse |
wander
| A．absorb | B．wallet | C．village | D．salary |
_________ that causes heavy haze sweeping over china remains unknown to many scientists.
| A．what it is | B．what is it |
| C．who is it | D．who it is |
If you put a stone in the way of an ant, it will go around, over, under or on top, without stopping, until it finds a way to get ______ it needs to be.
| A．what | B．how | C．which | D．Where |
As the Internet is expanding day by day, the opportunities for crime ______ as well.
| A．has been | B．is | C．have been | D．are |