1. If you could speak any language, witch language (would/will) you speak?
2. I would tell you if I (knew/know).
3. If you have a headache, using you mobile (will/would) make it worse.
4. If i (tell/would tell) you, will you keep it a secret?
5. You need to try harder if you (want/will want) to learn.
6. If you (send/sent) messages, it costs less.
1. would
2. knew
3. will
4. tell
5. want
6. send