Joe，I’m afraid I can’t hang out today.—________Usually you are free on weekends.

6．Be careful! The slightest spark（火花）could ______ the fireworks.

30. It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.

In order to________a good knowledge of English, he gave up his job and went to Britain. [ ]

James finished his lunch in _____hurry _____some of the food was all over the table