All possible means ____ to prevent the air pollution, but the sky is still not clear.
| A．is used | B．has been used | C．are use | D．have been used |
You can do it ______ you like; it really doesn’t matter.
| A．whatever | B．however | C．whoever | D．whichever |
On ______ the flight would be delayed, we made other arrangements.
| A．being informed | B．informed |
| C．informing | D．having informed |
Of the two possibilities, ______ is more likely than that.
| A．that | B．one | C．this | D．it |
As the popular saying ______, “Laugh and the whole world laugh with you. Cry and you cry alone.”
| A．speaks | B．goes | C．tells | D．talks |
You might just as well tell the manufacturer that male customers _____ not like the design of the furniture.
| A．must | B．shall | C．may | D．need |