1.He did his best to help me with my work.
=He (tried his best) to help me with my work.
2.All children from Sichuan reached Shenzhen last night.
=All children from Sichuan (got to)/(arrived in) Shenzhen last night.
3.A car accident happened when I was walking asross the street.
=A car accident (took place) when I was walking asross the street.
4.The Greens are leaving for America tomorrow.
=(The Green's family) are leaving for America tomorrow.
5.He fell behind his classmates because he was ill.
=He (couldn't/didn't catch up with) his classmates because he was ill.
6.Where is the hospital?
=(Which is the way to) the hospital?
7.What is he like?
=(What) do you (think of/about) him?
8.Can you tell me your home address?
=Can you tell me (where you live)?
9.Take the first turing on the right.
=Turn right (at the first turing).
10.I can't decide what I should do next.
=I can't decide (what to do) next.