选用恰当的介词填空。 | |
2. The students listen ____________ the teacher carefully. 3. I often get up ____________ six ____________ the morning. 4. There is a big boat ____________ the river. |
选用恰当的介词填空。 | |
2. The students listen ____________ the teacher carefully. 3. I often get up ____________ six ____________ the morning. 4. There is a big boat ____________ the river. |