1 What she said showed lack of common sense.（缺乏）
2 As I kept thinking about what had happened,I had a new idea.（反复思考所发生的事情）
3 你务必把给客人喝的咖啡冲得适合他们的口味.
Make sure the coffee you made suited the guests' tastes.
4 请把旅行要用的东西准备好.
Please get the stuff for travel ready.