I’m planning to hold a party in the open air,but I can make no guarantees because it _____the weather.

I don’t know _______to do next –It’s easy .Press the red button in 2 minutes.

It is estimated that considerable amounts of money______needed for the construction of theunderground[ ]

‘s wife doesn’t go to the party, ________

228Oh, the classroom is so dirtyIt needs ______ before we begin our class