4. Indefinite quantifiers: a few, a little, a lot of / lots of.
( Từ chỉ định lượng: a few, a little, a lot of / lots of.)
The streets of Ha Noi are very busy. There is......... of traffic. Most people only have....... money to spend on transportation. As a result, there are only....... private cars on the roads.
The bike is the cheapest form of transportation, so there are........... of bikes. There are ... of motorbikes, too. There are.......... of taxis, but they are expensive.