If English is not our first language you can often be puzzled by ways of expression that the native speaker of English does not even have to______.

【正确答案】 B

【答案解析】解析：A项表示“彻底思考，解决”；B项表示“考虑，回想”；C项表示“仔细考虑，重新考虑”；D项表示“预料”。根据句子的意思，应该选B。