Cats like eating mice, ______ my pet cat is friends with my pet mouse. (but/for/ because)
We keep our country clean _______ it is our duty to do so (as well as/in order to)
You can sleep next to me ________ you promise not to snore. (as long as/while/still)
I will return your tools _______ I find them. (unless/as soon as/after)
______ she is working, she isn’t feeling too well. (However/Although/Until)