The teacher came to the classroom and demanded ____ what had happened.
| A．his students to tell him | B．being told |
| C．telling him | D．to be told |
Please go _________the ship quickly. There is only fifteen minutes left.
| A．on the board | B．to aboard | C．on aboard | D．Aboard |
----- Did you visit her while you _____ in New York?
----- I _____ to, but I was extremely busy.
| A．stayed; was intending | B．was staying; intended |
| C．was staying; have intended | D．stayed; had intended |
John, look at the time. __________you play the piano at such a late hour?
| A．Must | B．Can | C．May | D．Need |
The new laws___________reducing the heavy traffic have come into___________.
| A．aiming at ; use | B．are aimed at; effect |
| C．aimed at; affect | D．that are aimed at; effect |
Water,________seems so simple and common, is___________makes life_________.
| A．that; that; possible | B．which; that; impossible |
| C．which; what; possible | D．what; which; possible |