________ surprised the hostess most is _________ one of her friends left the party without saying a word.
| A．What, that | B．What, what | C．That, that | D．That, what |
______red paint with blue paint, you will get another beautiful paint of different colors.
| A．Mixed | B．Mix | C．Mixing | D．To mix |
Not every member ______ the decision to give up the plan.
| A．shoulders | B．hands | C．heads | D．backs |
— Did Jack come back early last night?
— Yes. It was not yet eight o’clock ______ he arrived home.
| A．when | B．before | C．that | D．Until |
Not until she took off her glasses ______ she used to be my neighbor.
| A．I realized | B．I had realized |
| C．had I realized | D．did I realize |
The new teaching building ______ by the end of last month.
| A．has been designed | B．had been designed |
| C．was designed | D．would be designed |