单项选择题
I'm busy now, so it will be some time （）I can leave.
A、before B、after C、when
单项选择题 Jane hasn't finished her homework and I haven't finished mine, （）
单项选择题 Mr. Boffin drove there and （）his car outside the station.
单项选择题 Neither my dog （）my cat can be seen in the house. What's the matter
