用适当的连词填空两题

题目

用适当的连词填空两题
1,The qusetion is _____ we can protect the environmrnt efficiently.
2,He hasn't decided ____ or not he will attend the meeting.

答案

1,The qusetion is { whether / how }we can protect the environmrnt efficiently.
2,He hasn't decided { whether }or not he will attend the meeting.