This is such a wonderful film ___ we have never seen.
--- Mary is not coming tonight. --- But she .
John plays football , if not better than,David.
If the weather is fine,I’ll wash my clothes .If ,I’11 _____ .
--- She’s not an English teacher,is she? --- .
--- You should have thanked her before you left. --- I meant , but when I was leaving I couldn’t find her anywhere.