Complete the sentences using the zero conditional.

a) When you ___ (work) fast, you ___ (finish) quickly.

b) If he ___ (not/can) sing, he ___ (not/can) be in the school choir.

c) When dogs ___ (bark), they ___ (be) scared.

d) If you ___ (freeze) water, you ___ (make) ice.

e) If you ___ (eat) unhealthy food, you ___ (get) fat. ​