Question

—Did you return Fred's call?
—I didn't need to ________ I'll see him tomorrow.

A．though

B．unless

C．when

D．because

Answer 1

D

解析句意：——你给Fred回电话了吗？——我没必要，因为明天我要去见他。though虽然；unless除非；when当……时；because因为。