--- Are you sure you have to ? It's been very late. --- I don't know _____ I can do it if not now.
It has not been decided ____ they will leave.
The accident is reported to have occurred __________ the first Sunday in February.
The trouble is ____ we can not find such an expert.
People may have different opinion about Karen, but I admire her. ______, she is a great musician.
I am sure ____ you said is true.