想想

I will think about it and answer you soon. 想一想/考虑一下 I'm not thinking about anything now. 什么都没想。 I can't think clearly. 我想不清楚。 Please think about it and let me know the answer tomorrow. 考虑一下 Why do you always think I am lying to you? 认为/以为 ... 臆断/臆想

想想，考虑/思考/思索，想不通/想得通，认为，以为，觉得，想好了/没想好...　

I will think（思考、 考虑） about it and answer you soon. I'm not thinking about anything now.（根据语气 可以翻译为 想） I can't think（思考、想） clearly. Please think（思考、考虑） about it and let me know the answer tomorrow. Why do you always think（认为、以为、想象着） I am lying to you?

I will think about it and answer you soon. 我会考虑/思考一下，尽快答复你。(考虑/思考 is more formal, say u r making a business decision, u can also use 我想想/想一下/想一想，尽快答复你啊 informal) I'm not thinking about anything now. 我现在什么都没想/考虑 I can't think clearly. 我无法清晰地思考 Please think about it and let me know the answer tomorrow. 请思考/考虑一下，明天告知我。( I suppose this is a formal situation) Why do you always think I am lying to you? 你为什么总是觉得/认为我在骗你呢？