When _______ help, one often says “Thank you.” or “It is kind of you “
| A．offering | B．to offer | C．to be offered | D．offered |
We were caught in the heavy traffic jam. Otherwise, we _____ on time.
| A．would have arrived | B．arrived |
| C．must have arrived | D．should arrive |
.A powerful earthquake struck Haiti, ______ tens of thousands of homeless and buried in ruins.
| A．left | B．to leave | C．leaving | D．being left |
.All of the ski resorts are ____ from the hotel via free public transportation.
| A．available | B．accessible | C．present | D．probable |
In our class, when the bell rang and the teacher closed his book, it was a ____ for everyone to stand up.
| A．sign | B．chance | C．mark | D．signal |
.Mary felt ______from the outside world, since she lacked an Internet connection and couldn’t receive any e-mail.
| A．cut down | B．cut in | C．cut off | D．cut out |