____ I want to know is ____ I can master English in the shortest possible time.
| A．What; how | B．How; what | C．Which; what | D．What; what |
_____ it will do us harm or good remains to be seen.
| A．If | B．Whether | C．That | D．What |
Since everybody is clear, there is no _____ in discussing the question any further.
| A．point | B．possibility | C．wonder | D．doubt |
The general manager’s _____ directions confused the staff, who didn’t know what to do.
| A．ambiguous | B．complex | C．unconscious | D．punctual |
. Being hard-working is of the highest __________ to becoming successful.
| A．important | B．to be important |
| C．importance | D．being importance |
— Did you see _________ jacket on the playground just now?
— Is it _________ new one and very cool?
| A．a; the | B．the; a | C．a; a | D．the; the |