—Yes, I did. John is really a dark horse. Nobody           him to go so far.

—That's what I want. I've got a few kids.

—Yes, she always encouraged us and gave us support________ we met difficulties.

Water             ice at 0℃.

It has called this typhoon the worst              in South Korea in many years.

             , Nick. It's time to get up, or you'll be late for school.

A doctor is                                   at any hour of a day.

Her leg was                           it had to be amputated.

    Waves (波浪) are beautiful to look at, but huge waves are greatly harmful to ships at sea, as well as houses and buildings near the seaside. What causes waves? Most waves are caused by winds' blowing over the surface of the water. The sun heats the earth, causing the air to rise and the winds to blow. The winds blow across the sea, pushing little waves into bigger and bigger ones.

    The size of a wave is decided by how strong the wind is, how long it blows, and how large the body of the water is. In a small bay, big waves will never build up. But at sea the wind can build up big, powerful waves.

    It is believed that the height of a wave (in metres) will usually be no more than one-tenth of the wind's speed (in kilometres). In other words, when the wind is blowing at 120 kilometers an hour, most waves will be 12 meters high or less. Of course, some waves may came together to form big waves that are much higher.

    May 12th, 2018 is the 1oth anniversary of Wenchuan Earthquake. Many of us may have remembered what happened on May 12th, 2008. The devastating 8.0 magnitude Wenchuan Earthquake which killed about 69, 000 people in western China. It has been concerned (担忧) widely about what we can do when we encounter (遭遇) certain accidents.       

    Earthquake is the first thing that I am going to talk about. Firstly, you need to rush to open space quickly if you are in a lower floor. Meanwhile, you should avoid trees and wires around you. On the contrary (相反), you need to stay in a corner which seems firm if you are in a higher building.       You should keep your body safe and wait for others to help you.

    When it comes to fire, you need to distinguish the root of the fire and find out security exits.       Then you should crawl (爬行) on the floor. Do not use elevators or any electronic equipment.

    Another accident is drowning. Every summer, about 5,000 kids die because of swimming alone in the river or the lake. Experts say that we have the more possibilities of drowning if we struggle as possible as we can. So what we should do is: "       " The summer holiday is coming. My dear friend, take care of yourself.

    In a word, all kinds of accidents will happen in our daily life.       We should believe that the rate of danger can be minimized and we can not only get a chance to save ourselves but also help others if we learn about how to deal with them in the first place.