Choose the correct answer A, B, C, or D to complete each sentence.

1. The sky train is _______ with commuters at rush hour.

A. packed                    B. full

C. busy                       D. interesting

2. The town's public amenities make it a _______ place for its residents.

A. crowded                 B. boring

C. liveable                  D. dull

3. It's not always _______ on the metro. Pickpocketing sometimes takes place.

A. careful                    B. dangerous

C. noisy                      D. safe

4. It is often more _______ to live in the downtown than in the suburbs.

A. convenient            B. peaceful

C. quiet                     D. silent

5. Hong Kong is like a concrete jungle with so many people in it. It's a _______ city.

A. calm                 B. quiet

C. bustling            D. high