Would you like to go for a walk with us___, but I’m busy.

Have you _____ completing the work given by your boss?—Not yet, though I have tried to.

I saw a woman running toward me in the dark. Before I could recognize who she was, she had run back in the direction ______ she had come.

Not until he went through real hardship _____ the love we have for our families is important.

Had he spent more time practicing speaking English before, he _______ able to speak it much better now.