Excuse me, has the train from Beijing arrived yet? — _____, you are three quarters earlier It’s only 9 now [ ]

There are two roads andeitherto the station.

The Australian boy has a good ________ of Chinese and can communicate with others freely.

No worker and no engineer whoit is that is forthe explosion of the chemical factory.

What were you doing when Tony phoned you?—I had just finished my work and _______ to take a shower.