It isn't quite __________ whether the teacher will collect the homework by Friday, so you needn't hurry.
Look out! The ceiling _____ l down.
. Intelligence is to some extent _____ one is born with
The parking meters are installed in streets to record and show the time _____ a driver has paid for is finished
When I offered to take Jane to the ancient town, she asked what _____ to see there
_____ wants to may come to the party on Saturday night.