The goods on this counter ____ at a discount of 25%, like the typewriters, television receivers, dustbins, etc.
----Have you seen Tom and Mary? ----I haven’t seen____ of them.
I rang you several times yesterday but couldn’t____.
----I think you look nice in the red dress. ----____.
____ caused the accident is still a complete mystery.
We made use of every minute ______ for the coming examination.