試題詳解

133.
(A) We use the latest cleaning techniques and equipment to ensure that every surface is clean and free of germs and bacteria.
(B) We are a London based tech startup, aimed at helping businesses comply with clean-air regulations.
(C) Choose from daily, weekly, bi-weekly, or monthly cleaning services to fit your budget and preferences.
(D) It is rapidly becoming clear to us that every company needs a crew of cleaning experts to remind staff of flushing the toilet and to ensure washbasins are clean.