It was so quiet in the classroom that a needle _________ to drop onto the floor.[ ]

The tourists will find the guide book is of even ________ practical value than they thought, as it shows different routes to the places they are going to.

Maria，is that new bike _____ — No._____ is old.

I’m still working on my project.-Oh,you’ll miss the deadline.Time is . [ ]

You were out when I went to visit you yesterday.—Oh, I________ for a friend from England at the airport.