1. The answer is 8.625, a __ of calculation. A correct B right C precious D precise 2. We prefer to discuss the fully __ it in practice hurriedly. A than put B to put C rather than put D to putting 3. Mother is __ us dinner. We may wash our hands and __ the meal. A preparing prepare B preparing prepare for C preparing for prepare D preparing for prepare for 5. Let us leave the things as they are __.We can always make changes later on if necessary. A for the moment B at present C to the present D up to the present 6. It is the duty of the police to __ the public order. A prevent B present C preserve D prepare 7. When we meet in the street we pretended __ each other. A not to know B to not know C knowing not D not knowing 8. Some of the traditional customs still __ among members of the older generation. A prevent B prevail C existence D widespread