I have no idea _______ he will be back or not.（ ）
A: whether
B: that
C: When
D: where
A: whether
B: that
C: When
D: where
举一反三
- I have no idea he will come back home. A: that B: which C: when D: where
- I have no idea _______. A: when he will come back B: when come back will he C: when will he come back D: will he come back when
- I have no idea __________ he will be back. A: when B: what C: that D: where
- It doesn' t matter _____he' s come back or not. A: if B: whether C: that D: when
- I don't know ______ he will come or not. A: if B: whether C: when