If条件状语从句专项练习一、用所给词的适当形式填空1. If you _ (feel) tired, you _ (have) to have a rest.2. Where _ he _ (see) the film if he _ (have) time?3. If there _ (be) fewer trees, there _ (be) more pollution.4. He _ (dress) more casually if he _ (not work) on weekends.5. If Marcia _ (live) alone, she _ (keep) a pet parrot.6. Lana _ (buy) a new dress if th