_what to do, I had to turn to my parents for help.
A: Not know
B: Not known
C: Not to know
D: Not knowing
A: Not know
B: Not known
C: Not to know
D: Not knowing
举一反三
- （）what to do, he went to the manager for help. A: Not to know B: Not knowing C: Not having known D: Having not known
- __________, he went to Mr. Green for help. A: Not to know what to do B: To not know what to do C: Not knowing what to do D: Knowing not what to do
- _____ how to deal with the trouble of the computer, Jane had to ask her brother for help. A: Not know B: Not known C: Not to know D: Not knowing
- ______what to do,the man telephoned the police． A: Not known B: Not knowing C: Don't know D: Knowing not
- ______ what to do, the man telephoned the police. A: Not known B: Not knowing C: Don't know D: Knowing not