1. You'll need a visa if you (want)to travel to China. 2.If he (care) about other people's feelings,he wouldn't behave that way. 3.She (not be) successful if she doesn't learn to control her temper. 4.If I'd known you were such a gossip,I (not tell) you my secret. 5.They would work harder if they(not be) so tired. 6.The boss (be) furious if he'd found out what you were up to. 7.If the temperature (fall) below freezing,water turns to ice. 8.If they(not expect) delays,they wouldn't have set off so early. 9.Open the envelope and we (discover) what John has been doing.