题文
—What are they doing at the bus stop?
—They are waiting for a bus________.
| A.to come |
| B.come |
| C.coming |
| D.to coming |
—What are they doing at the bus stop?
—They are waiting for a bus________.
| A.to come |
| B.come |
| C.coming |
| D.to coming |
试题篮
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