__ he driven morecarefully, the accident would not have happened the other day.

The policy of the mainland is very clear and straightforward，and the key problem is ______ the leaders of Taiwan will accept it.

Lkeep my eyes open to stay awake any longer．

24Is it the years ____you worked in the factory____ have a great effect on your literary works?

The government requested that all the people ___________ in any indoor public area.