摘要：44．A．societies B．communities C．neighborhoods D．families
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________the old man got on the bus．
- A.Supporting the young man
- B.Supported by the young man
- C.Being supported by the young man
- D.To support the young man
______the extremely hot weather, we continued having classes．
- A.Thanks to
- B.In addition to
- C.In defence of
- D.Regardless of
________ such heavy pollution already, it may now be too late to clean up the river．
- A.Having suffered
- B.Suffering
- C.To suffer
- D.Suffered