Up to now,I haven’t got any idea ____ we should go on with the project. [ ]

People used to communicate on the phone， but now they are used __________on Wechat because it makes communication ________..

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

Tom, pleasetell me____________.—-In Sunshine Second School.

The pencil fell off the table and went_______across the floor.