1.   As an actor, Poitier was quite effective in his understated, quietly confident way.

2.   It looks quite effective.

3.   Well the protection from Black Rock at Eastwood has been quite effective.

4.   After all, the technique is relatively cheap and quite effective.

5.   Alkoxysilanes were actually designed to work by chemically bonding to silicate stone like sandstone, on which they are quite effective, conservators say.

6.   But despite age and knee surgeries, he can still be quite effective.

7.   But efforts that focus attention on such cruelties have been quite effective.

8.   But it was these same distasteful glycoalkaloids that researchers found to be quite effective at inhibiting the growth of fungi, the microbes responsible for most rotting in fruits.

9.   Efforts by U.S. authorities in recent years have been quite effective in clamping down on the flow of illegal immigrants from Mexico.

10.   Elite colleges are generally quite effective in ensuring that every student succeeds.