Why didn’t you tell me there was no class today? You _____ me about it earlier.
| A．ought to have told | B．should tell |
| C．should have been told | D．ought to be told |
On foggy days, you have to drive very ________ on the expressway to avoid traffic accidents.
| A．cautiously | B．neatly | C．smoothly | D．properly |
One thousand dollars a month is not a fortune but would help cover my living.
| A．bills | B．expenses | C．prices | D．charges |
—Mary broke up with me!
—You_ _have forgotten about the Valentine's Day．
| A．shouldn't | B．couldn't | C．needn't | D．mustn't |
Have you considered how weak humans area volcano, hurricane or earthquake?
| A．comparing with | B．to compare with |
| C．compared with | D．having been compared with |
Can you explain ________ the sun goes down in the west?
| A．why is it that | B．why it is that | C．how it is that | D．how is it that |