---Have you decided already?
---Yes, I at once.
| A．have decided | B．decided | C．will decide | D．had decided |
____was known to us all that Johnson had broken his promise____he would give each of us a small gift.
| A．As; which | B．What; that | C．It; that | D．It; which |
Things of___kind come together; people of____kind fall into___same group.
| A．the；the；the | B．a；a；the | C．the；the；a | D．a；a；a |
Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale．
| A．man has been | B．man is | C．has man been | D．will be man |
Yesterday I had a word with the CEO of the company, ___ who used to teach at Beijing University．
| A．one | B．the one | C．that | D．it |
In our university there are several big parks ____we students can go to enjoy the beautiful scenery．
| A．to which | B．at which | C．from which | D．in which |