Matching Pairs Zero Conditional Online version Соедини части условных предложений. by Quest Eng 1 If I oversleep.... 2 If I don't understand my English teacher.... 3 If I can't sleep at night.... 4 When I have a headache... 5 Unless Peter has health problems... I read a book. he does his homework quickly. I ask him or her to say it again. I don't panic and do things quickly. I usually take a pill.