---It has been ages ________ I last saw you. --- Yes. And it will be long ______ we meet again.
Can you help me with this math problem? I _______.
A cat is ______ a tiger ______ many ways.
.I have bought two ball pens, _______ writes well.
If you are _______ about Australian cities, just read the book by Dr. Johnson, which introduces them in detail.
This suggestion is well worthy ________.