She had to work deep into the night, ______she couldn't have spread the messages to all the relevant people successfully.
Susan was expecting her favourite singers, but to her disappointment, ____ appeared.
---So I’m going to make the desk myself. ---Why ____ instead, if I may ask?
Painted red ____ white walls, the houses look wonderful.
—You couldn’t have chosen any gift better for me. —
The systemn has been designed to give students quick and easy to the digital resources of the library.