Sorry, I’m late. —It’s OK. However, you________come to the company today, for it is Saturday. [ ]

______ the serious sandstorms that have hit the city recently, the quality of the air in Beijing is very poor[ ]

I will spend half of my holiday practicing English and _____________ half learning drawing．

I would have come to see you earlier, but I __________ too busy.

Be careful not to drop the Ming Dynasty vase. —Yes, we can’t be ________.