His singing career began to ______ in the late 1990s.
A. get off B. take off C. put off D. set off
I hate ______ when the weather becomes freezing cold because there is no heater inside.
A. this B. that C. it D. so
Is this the first time you_______ Beijing?
A. have visited B. was visiting
C. visited D. has visited
— Father, you promised!
— Well, ________. But it was you who didn’t keep your word first.
A. So was I. B. So did I. C. So I was. D. So I did.
Hurry up﹗The train ______. You know it ______ at 9:00 am.
A. leaves; leaves B. leaves; is leaving
C. is leaving; leaves D. is leaving; is leaving
现今，大城市普遍存在着交通问题。它不仅给人们的生活和工作带来不便而且还威胁到了人们的生命安全。请以“Traffic Problems in Big Cities”为题，根据以下内容提示完成作文：
1. 描述两个常见的交通问题；
2. 简要分析导致这些交通问题的主要原因；
3. 根据你的分析，从社会规范(rules and regulations)和个人行为两方面谈谈你得到的启示(不少于两点)。
注意：1．词数：120 左右，开头已给出，不计入总词数。
Nowadays, traffic problems are common in big cities._______________________
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