Fill in the blanks with words or expressions from the boxes. optimistic pessimistic figure out rush directions favor commute pollution dress up sightseeing 1.I keep a box of old clothes for the children to________in. 2.Don't be so_________.Everything will be fine. 3.It took them about one month to ________how to use the machine. 4.Steve is always in a(n)_______He never stays here long. 5.We can go________downtown tomorrow. 6.Nina is really__________.She can see the good in any situation. 7.As a(n)_______to my neighbor,I offered to pick his kids up from school. 8.There is so much________in this city.I can barely breathe. 9.My morning_________takes 45 minutes. 10.You had better ask someone else.I am