题文
---Does Ted tell you _____ he will come next week?
---No, he doesn’t. But _____ he comes, I’ll give you a ring.
| A．if ; whether | B．whether; whether |
| C．if; if | D．if; until |
---Does Ted tell you _____ he will come next week?
---No, he doesn’t. But _____ he comes, I’ll give you a ring.
| A．if ; whether | B．whether; whether |
| C．if; if | D．if; until |
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