Do remember to be________. We must avoid any possible risks
We must do everything possible to prevent such things from__
We must do everything possible to keep them ____(safety)
改被动语态:we must do everything possible to keep environment cle
avoid doing和avoid to do
we must take all possible measures tending to improve workin
Do remember that you must do--you are told to.
avoid sth,avoid to do sth ,avoid doing sth
把 We must obey the traffic ruies to avoid traffic accidents改
we must be careful,however,to avoid misconception.however是副词
He said that it would be________(possible)to build the talle
It is not possible to change any one in yourself,you must ch
we must do it as soon as possible改写为被动语态