解决几个英语单选题1.___ the project completed, all the workers anxiou

解决几个英语单选题
1.___ the project completed, all the workers anxiously looked forward to being paid what they should.
A.With B.After
❤答案选A,请问B为什么不行?
2.It looks like the weather is changing for _____.
A.the worse B.worse
❤答案选A,请问为什么?
3._____ customers,the company said the amount of the chemical in the shampoo products wouldn’t harm people’s health.
A．To calm B.Calming
❤答案选A,我知道这样是表示目的,但是为什么B不行?边说边使顾客冷静