Question

Fred is away at the moment. I don’t know exactly when he’s coming back but I’m sure he’ll be back _____________Monday.
a. By
b. Until
c. In
d. At​

Answer 1

Fred is away at the moment. I don’t know exactly when he’s coming back but I’m sure he’ll be back __ON__________Monday.

a. By

b. Until

c. In

d. At