A question word + to-infinitive He didn't know what to do. B question word + clause They never found out why it had happened. Do you know how to download these files? 3a Read the information above.Then complete the second I sentence so that it has a similar 'meaning to the first sentence , using the word given. 1 Mike can't use a camcorder . how Mike doesn't __ a camcorder. 2 When you've done the things I want you to do. you can go out . what You can go out when __ want you to do. 3 We don't know the right places to find the information .where We aren't sure __ the information 4 I'm not sure which person I should believe who I don't __ believe.