If _____ to look after luggage for someone else, inform the police at once.
| A．asked | B．to ask | C．asking | D．having asked |
______ Flying Luxury Hotel of Tomorrow is ______ huge 400-ton aircraft without wings.
| A．/, a | B．The, a | C．The, the | D．A, a |
, most teenagers now listen to rock music. However, Rose likes classical music.
| A．In a word | B．In general | C．In time | D．In total |
In hi
s spare time, he often listens to music or watches TV to himself.
| A．encourage | B．entertain | C．educate | D．direct |
—Mary is very clear and studies very hard.
— she stands out in almost all her subjects that she learns.
| A．No doubt | B．No problem | C．No way | D．No wonder |
To the surprise of many people, in ten years the city’s population by 12%.
| A．gained | B．expanded | C．developed | D．spread |