You ..... (have) better control of your river bug if you ..... (use) webbed gloves and flippers.
Unless you ..... (like) getting wet, you ..... (not/enjoy) river bugging.
If you like extreme sports, you ..... (love) ice climbing.
They always put on sunscreen when they ..... (go) volcano surfing.
If you ..... (not have) a four-wheeled motorbike, you ..... (can/not/go) quad racing.
If you ..... (not/wear) protective clothing when wok racing, you ..... (get) hurt.
He ..... (should/not/try) river bugging unless he ..... (know) how to swim.
Unless you ..... (wear) boots with spikes, you ..... (not/be able) to go ice climbing.
When the temperature ..... (drop) below 0°C, water turns to ice.
When iron gets wet, it ..... (rust).