Oral problems can not be avoided in any way.A．RightB．WrongC．Not mentioned

This problem is beyond his ability and he can not

What can be done to prevent swine flu？A．Stop touching mouth, nose or eyes.B．Avoid

Oral problems in children can develop into more severe problems.A．RightB．WrongC．Not mentio

Heat damage to fuel injection nozzles can be prevented by avoiding ____.A.excessive fuel o

No one can avoid _____ by advertisements.A: influencingB: being influencedC: to influe

Colds can be avoided.A．RightB．WrongC．Not mentione