1.   All the experts agree that you had better do a lot of homework before you buy any tech stock.

2.   Companies that have done better have done so by finding faster-growing niches.

3.   If Clinton is sincere about Americans searching their hearts, he had better do more than just hope.

4.   If you are trying to prevent a virus from spreading, you had better do so quickly.

5.   In fact, this whole subject is so convoluted that you had better do some serious homework.

6.   When the sums expended on science blow the mind, the knowledge gained had better do so too.

7.   Teammate Don Myrah, however, said the Americans had better do well in the sport they invented if they want it to grow some more.

8.   Kostner, the downhill favourite, was forced into second place in that race, and will be determined to do one better this time, weather permitting.