The young trees should ______well as often as possible.

We find ------interesting to learn history.

According to the newly-made traffic regulations, ____drives through the red light ____be fined at least 200 dollars.

The well­dressed lady was caught stealing in the fashion shop. Strangely enough，she ________have done such a thing.

He______ his work, otherwise, he wouldn’t be enjoying himself by the seaside.