—It’s a long time ________ I saw you last.—Yes,and what a pity it is now that it will be a long time ________ we see each other again.
____ method you choose, so long as you finish the job on time.
I am so glad that I have found the same modern computer ____ I am working on.
. We would do more such exercises in the future, I think, ____we did yesterday.
. ____ it will do us harm or good remains to be seen.
. The river, ____ are covered with trees, is very long.