Having decided to rent a flat, we _____contacting all the accommodation agencies in the city.

Vitamin D helps our bodies make a special chemical, and this special chemical, ______, affects our brains, making us feel happy.[ ]

To qualify yourself for this kind of new job, Irecommend that you ________ some online courses.

With a lot of homework _________, I had to stay at home all day.

I would have come here on timeBut my car