Many people are still in __ habit of writing silly things in __ puplic places.
| A．the…the | B．/…/ | C．the…./ | D．/…the |
Time should be made good use ______ out lessons well.
| A．of learning | B．to learn | C．to learning | D．of to learn |
.Which do you enjoy ______ your weekend, fishing or staying at home?
| A．spending | B．to spend | C．being spent | D．spend |
We should prevent pollution ______ happily.
| A．from living | B．to live | C．from being lived | D．to living |
.It is sleeping late in the morning that ______ being late for work.
| A．devotes to | B．sticks to | C．sees to | D．leads to |
______ 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 |