18.I’m afraid I won’t have any influence over my 20-year-old son ____ his mind is made upA.once B.since C.unless D.while

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18.I’m afraid I won’t have any influence over my 20-year-old son ____ his mind is made upA.once B.since C.unless D.while

18.I’m afraid I won’t have any influence over my 20-year-old son ____ his mind is made upA.once B.since C.unless D.while
18.I’m afraid I won’t have any influence over my 20-year-old son ____ his mind is made up
A.once
B.since
C.unless
D.while

18.I’m afraid I won’t have any influence over my 20-year-old son ____ his mind is made upA.once B.since C.unless D.while
A
一旦他已决定,对于我二十岁的儿子我是很难再对他施加任何影响的.

A

A
一旦

A