5. The huge marble             (重達(dá)）30 tons.

4.__________________ (直到今天）， scientists haven't found out the answer to the question.

3. The boss       his driver      (命 令)drive fast.

2. Though he was ill, Tom still       ____ (繼續(xù)）work hard.

1.__________ (根據(jù))the news on TV， the heavy snow has influenced the local traffic.

5. The Great Pyramid and the Great Wall are two of the Seven W      of the World.

4. The laptop is an important t      for our daily work.

3. The story happened a________ 670 B. C.

2. They plan to c      the whole task in ten days.

1. He f      a light on his bike to help him travel during the night.