题文
I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you.
| A．if ; Whether | B．whether; Whether |
| C．if ; That | D．if ; If |
I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you.
| A．if ; Whether | B．whether; Whether |
| C．if ; That | D．if ; If |
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