用所给动词的适当形式填空。
1. He can _____________ (catch) the ball.
2. They usually _____________ (teach) each other.
3. Jenny often _____________ (buy) some things at the store.
4. We _____________ (go) to a little store this morning.
5. You _____________ (have) fun today.
6. He _____________ (be) a good basketball player.

【考点】情态动词,系动词,一般现在时，动词单数第三人称,一般过去时，动词过去式,实义动词

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