Fill in the blanks with the words given in the box. how what when where which
(i) My friend lost his chemistry book. Now he doesn’t know _____________ to do and _____________ to look for it.
(ii) There are so many toys in the shops. Neena can’t decide ____________one to buy.
(iii) Yo u don’t know the way to my school. Ask the policeman __________ to get there.
(iv) You should decide soon _______________ to start building your house.
(v) Do you know _____________ to ride a bicycle? I don’t remember ____________and _____________ I learnt it.
(vi) “You should know ________________ to talk and _____________ to keep your mouth shut,” the teacher advised Anil.