When you are in Singapore, you can go...

Câu hỏi: When you are in Singapore, you can go about (1) _________ taxi, by bus, or by underground. I myself prefer the underground (2) _________ it is fast, easy and cheap. There are (3) _________ buses and taxis in Singapore and one cannot drive along the road (4) _________ and without many stops, especially on the Monday morning. The underground is therefore usually quicker (5) _________ taxis or buses. If you do not know Singapore very (6) _________, it is difficult (7) _________ the bus you want. You can (8) _________ a taxi, but it is (9) _________ expensive than the underground or a bus. On the underground, you find good maps that tell you the names of the stations and (10) _________ you how to get to them, so that it is easy to find you away.

A. at

B. in

C. by