A red sky in the morning _____ to be a sign of bad weather.
| A．says | B．is saying |
| C．has said | D．is said |
Carol said the work would be done by Octorber, ____ personally I doubt very much.
| A．it |
| B．that |
| C．when |
| D．which |
____ one can achieve largely depend on ____ hard he works every day.
| A．What; how | B．That; how | C．What why | D．That; why |
—How did you like Nick’s performance last night?
—To be honest, his singing didn’t ____ to me much
| A．appeal |
| B．belong |
| C．refer |
| D．occur |
Each button, when ____, provides a piece of beautiful music.
| A．clicked |
| B．having clicked |
| C．clicking |
| D．being clicked |
—Who do you guess I am?
—Sorry, your name ____ my mind.
| A．slipped |
| B．has slipped |
| C．had slipped |
| D．slips |