Answer & Explanations:
For 2, the answer is, "too many". There are too many cars, so the road is crowded.
For 3, the answer is, "enough". If there are enough places to work, unemployment rates are low.
For 4, the answer is, "too little". They know too little about the area to feel safe to move there.
For 5, the answer is, "enough". They didn't have enough time to complete assignment, so they asked for me.
