Some of the exercises appear to be _____ones that you have done, but after taking ____second look, you will find that they are different.
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.
He is rather difficult to make friends with, but his friendship, ____, is more true than any other.