We know seeds are very important for us. Some plants have more 1.____ than other plants. Little seeds will grow up to be new 2.____.
Seeds have no feet and no wings. But some seeds are good travelers. Do you know, how do seeds travel?
Yes. Seeds travel in 3.____ ways. Some seeds travel with wind，we know 4.____ travel with wind. Some seeds travel with water. For example,5. ____ travel with water. And we also know 6._____ travel with animals. But, how do 7._____travel? They travel by themselves.
| A．with, and | B．to, but | C．of, but | D．on, and |
| A．in, on | B．in, in | C．on, in | D．on, on |
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