My father is ill in hospital, I’m looking after him. —___________.

It isn’t quite whether the teacher will collect the homework by Friday, so you needn’t hurry.

The Great Wall is __________ tourist attraction thatmillions of people pour in every year.

_____ the city’s public school system should be opento the children of migrant workers has become the focus of discussion

What a surprise it is that you’ve hiked on Mount Tai! — I didn’t believe I could do it _____ I got to the top.