. The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.
Ms. Claire is a strict but kind teacher, _____ I respect and appreciate most.
There is a small group of English words which even some native speakers and writers find _____.
I got _____ bad toothache yesterday,which kept me awake _____ whole night
—Good morning, Grand Hotel. —Hello, I’d like to book a room for the nights of the 18th and 19th. —_____.
He speaks English well indeed, but of course not ______ a native speaker.