Fred is away at the moment. I don't know exactly when he's coming back butI'm sure he'll be back _______Monday.
A: by
B: until
A: by
B: until
举一反三
- ---Do you know when he will come back tomorrow. ---Sorry. I don t know. When he back I tell you.
- —Do you know when he will come back tomorrow?--Sorry, I don't know. When he ____ back, I'll tell you. A: comes B: will come C: come D: may come
- I don"t know when he ______ back. When he comes back, please let me know. A: would come B: comes C: will come D: is coming
- I don’t know _____ he will be back home. A: who B: what C: when D: where
- I don’t know when he ________. When he _______ here, I’ll call you in a minute.