1.These caterpillars (幼虫) in this experiment died of starvation (starve) due to moving in a wrong direction.
2.I was able to get on with my work without interruption(interrupt).
3.The fruit was ripening (ripen)on the tree.
4.In the final analysis (analyze), to get profit is the motive.
5.I tentatively(tentative)suggested that she might be happier working somewhere else.
6.A workman must sharpen (sharp)his tools if he is to do his work well.
7.They collect blood samples for analyses (analysis)at a national laboratory.