I didn’t know ______ Tom was coming.
A: if
B: whethe
C: if not
D: whether or not
A: if
B: whethe
C: if not
D: whether or not
举一反三
- I didn’t know ______ Tom was coming. A: if B: whether C: if not D: whether or not
- I didn't know whether she or not. A: will come B: is coming C: would come D: comes
- I didn‟t know _______ or not he will come. A: that B: whether C: when D: if
- I didn’t know _______ he will come or not. A: that B: whether C: weather D: how
- James has just arrived, but I didn’t know he________________until yesterday. A: will come B: was coming C: had been coming D: comes