I’m told that languagepractising．com is a free website ______learners can not just learnvarious languages but also chat online．

This isriver. Few of us can swimit, I think.

________ plastic bags we use, ________ it will be to the environment.

Can you show me _______ to use this kind of camera?-Sorry, I don’t know, _______.

It is a good habit of ______ to read a few lines before going to bed.