It _____ last week that the haze(雾霾)in Beijing caused many problems.

Myparents _____ in Hong Kong They were born there and have never lived anywhereelse

Betty to represent our school to take part in the Maths Olympics.

Chongqing is ______ most beautiful mountaincity and I’m sure to come for ______ second time.

It is a pity that most slimmers ________ putting weight back on.[ ]