[ Grammar ]
She don’t know how ________ this machine.
A. to operate
B. operating
C. operate
D. operating
Select your answer:

Random Topics:
Verb FormsCountable - UncountableGerunds as objects of prepositionPossessive AdjectivesPreposition & Relative ClausesOn, At, ByLinking Verbs & Helping VerbsDefinite vs Zero Article Abstract NounsAdverb of TimeFuture - be going toOther quiz:
Grammar › ViewMy three brothers are always competing _________ themselves.
A. by
B. within
C. among
D. between
“Put” Phrasal Verb › View
If you live in the city centre you have to __________ more noise and pollution.
A. put aside
B. put forward
C. put up with
