She ________ into the thick forest alone on such a dark night.

－It’s a good idea. But who is going to ____ the plan? －I think Tom and Greg will. 

However, at times this balance in nature is disturbed, ____ a number of possibly unforeseen effects.

The famous actor keeps fit by ________ for an hour every morning.

Returning from abroad, Miss Yu received from her lovely students a nice present to which a note was ______, saying “We love you!”