The reason for his success is ______ he worked very hard.
| A．why | B．that | C．whether | D．How |
“All ______ present, and all ______ going on smoothly.” Said the secretary.
| A．are; is | B．are; are | C．is; is | D．is; are |
--- We really enjoyed ourselves at the party. Thanks again, Mr. and Mrs. Smith.
--- ________. Just drop in whenever you feel like it.
| A．With pleasure | B．Our great honor |
| C．Nice to meet you here | D．Nice having met you here |
____ you have the chance to go to university in the future, you must take it.
| A．Will | B．Should | C．Would | D．Could |
---When do you think we can meet again?
--- Well, anytime you feel like ______.
| A．so | B．one | C．that | D．it |
Thank you for your help. ______ for your help, I wouldn’t have succeeded in my experiment.
| A．If it is not | B．Were it not |
| C．Had it not been | D．If they were not |