Nowadays teachers tend to be more dependent on ________ is thought to be a great teaching aid—the computer.
| A．that | B．which | C．what | D．As |
The elephants ought ______ hours ago by the keepers.
a. to be fed b. to feed c. to being fed d. to have been fed
You ______ last week if you were really serious about your work.
a. ought to come b. ought to be coming c. ought have come d. ought to have come
.The students in the classroom ______ not to make so much noise.
a. need b. ought c. must d. dare
No one ______ that to his face.
a. dares say b. dares saying c. dare say d. dare to say
“Time is running out,______?”
a. hadn’t we better got start b. hadn’t we better get start
c.hadn’t we better get started d. hadn’t we better not started