英语;用下面词的适当形式填空：approve ,claim,appetite,interfere with ,concerning
1,he tries not to let business ___his home life.
2.if you eat a lot of chocolate before supper ,it will spoil your ____.
3.the equipment must be bought from a supplier ____by the company ; otherwise it is possible that we bu cheated.
4.the government ___they have reduced personal taxation ,but i would dispute the statement.