His experiment done in ______ summer of 1970 was ______ failure.
| A．/; a | B．/; / | C．the; a | D．the; / |
— Where are my new sneakers? Have you seen them?
一How I know? I’ m your sister, not your servant.
| A．shall | B．will | C．should | D．might |
Each misfortune you come across will carry in the seed of tomorrow's good luck. So hang on until you succeed.
| A．one | B．some | C．that | D．it |
_____sufficient historical and legal grounds, China's position on the South China Sea has been consistent and clear.
| A．Associated with | B．Based on |
| C．Centered around | D．Assessed by |
--Kim, give me your report by 1O am.
--__ have you been in charge of this project?
| A．Since when | B．By whom |
| C．For what | D．From where |
—Do you know the newly appointed CEO?
--__________.
| A．I’ll check it |
| B．Only that there is one |
| C．More often than not |
| D．It will come to me |