The elephants ought ______ hours ago by the keepers.a. to be fed b. to feed c. to being fed d. to have been fed
The school is no longer what it was 20 years ago, _______it was so poorly equipped.
._________alone in the large house, the little boy had to learn to survive by himself.
---Can I use the telephone on the table, sir? ---Under no circumstances___________the telephone in the office' for personal affairs.
.__________having hundreds of online "friends" is great, our real and closest connections still lie with those who are a part of our daily lives.
After driving for five hours, they arrived at_________they thought was the place they had been dreaming of.