I never doubt _____ this exhibition is worth ________.
| A．whether, to visit | B．that, to visit |
| C．if, visiting | D．that, visiting |
Running in the morning can make me ________ relaxed .
| A．felt | B．to feel | C． feel | D． Feeling |
She looks very busy . I want to help her , but I don't know ___________ .
| A．what to do | B．what to do it |
| C．how to do | D．why to do |
I think math is as __________ as English .
| A． important | B．Very important |
| C．less important | D．the least important |
I believe my dream _________ true in the future .
| A．comes | B． came | C． Will come | D．To come |
---Will people live to be 300 years old ?
--- ______________ .
| A．No, there are . | B．No, they won't. |
| C．No, they don't . | D． No, they can't . |