Traditionally，college students hold a graduation ceremony to encourage themselves before they________on their life journey. (2013·安徽，26)
| A．give up | B．settle down |
| C．get through | D．set off |
________ he seems to know everything.
| A．Young as he is, yet | B．Young as he is |
| C．As he is young, but | D．Though he is young, but |
_______, there would be no air around the earth.
| A．There were no gravity | B．There was not any gravity |
| C．Were there no gravity | D．was there no gravity |
______ seen such a magnificent city as Beijing.
| A．I before never have | B．Never have before I |
| C．Never before have I | D．Before never have I |
Those children are wild. I feel sorry for _____ has to be their baby-sitter.
| A．whom | B．who | C．whoever | D．the one |
I want you to be honest. I hope you feel free to say _____ is on your mind.
| A．whatever | B．anything | C．everything | D．that |