题目内容：

    Once, on a cold day in September, when I was very little, my big sister _________ me to a beach not far from our house.

Near the beach there was a tidal(受潮汐影响)island, which _________ that when the tide goes out, you can walk to it, _________ when the tide comes in again, you can't get to it. Mum and Dad _________ let us go there.

When we _________ the beach, the tide was out. My sister _________ going to the island.

"But Mum and Dad said we couldn't. It's _________!" I said.

"Don't worry," said my sister. "I'll _________ you. Trust me."

I was a bit _________, but the island looked very nice in the autumn sunshine. We walked over the sand to the island and started to __________. We just found an old ruined building.

Suddenly, dark clouds covered the sun and it got windy. I said, "I'm __________ and I want to go home."

We walked back over the island to the __________. But we couldn't find it! It wasn't there anymore! The tide had come in and __________ the beach.

"Quick!" shouted my sister. "We have to run before it's too __________!"

The water was too deep and cold for me, and I started to __________. I was very frightened. But my sister was calm. She asked me to climb on her back. "Hold on!" she said.

The __________ was up to her middle, but my sister was very strong and ran through the waves with me on her back. She got very wet, but we got back to the mainland __________.

When we finally got home, Mum asked my sister why she was so __________.

We told her what had happened and __________ apologized to her. We both __________ not listening to their warning and learned our lesson---think twice before you leap.

1.A.introduced B.brought C.rushed D.took

2.A.means B.proves C.explains D.requires

3.A.since B.so C.but D.until

4.A.still B.just C.sometimes D.never

5.A.found B.reached C.cleaned D.left

6.A.suggested B.enjoyed C.imagined D.admitted

7.A.crowded B.boring C.noisy D.dangerous

8.A.depend on B.look after C.learn from D.look at

9.A.curious B.angry C.happy D.afraid

10.A.explore B.talk C.think D.understand

11.A.injured B.satisfied C.full D.cold

12.A.bridge B.boat C.beach D.building

13.A.divided B.attacked C.covered D.connected

14.A.high B.late C.heavy D.dark

15.A.fight B.move C.cry D.argue

16.A.water B.storm C.grass D.stone

17.A.silently B.safely C.slowly D.suddenly

18.A.lucky B.patient C.smart D.wet

19.A.publicly B.secretly C.sincerely D.informally

20.A.regretted B.remembered C.considered D.avoided