Read the following text carefully and choose the correct answer for each of the gap.
When you are in Singapore, you can go about (1) by; in; ontaxi, by bus, or by underground. I myself prefer the underground (2) because; but; when it is fast, easy and cheap. There are (3) many; a lot; few buses and taxis in Singapore and one cannot drive along the road (4) quickly; quick; quicker and without many stops, especially on the Monday morning. The underground is therefore usually quicker (5) than; like; so taxis or buses. If you do not know Singapore very well, it is difficult (6) to find; find; finding the bus you want. You can take a taxi, but it is (7) more; less; most expensive than the underground or a bus . On the underground, you find good maps that tell you the names of the stations and show you how to get to them, so that it is easy to find your way.