THOSE / US / SMOKE / HAVE LUNGS / X-RAY / REGULARLY. A. THOSE OF...

85. those / us / smoke / have lungs / x-ray / regularly. A. Those of us who smoke should have our lungs x-rayed regularly. B. Those of us smoke and have the lungs x-ray regularly. C. Those of us who smoke and have the lungs x-rayed regularly. D. Those of us smoke and so have our lungs x-ray regularly. Your answers: