题目内容

用所给单词的适当形式填空。
1. Has she ever s________ (see) such beautiful flowers?
2. Look at the t________(traffic) lights. They are red.
   I think you must wait.
3.—It's fine today.
   —I think so. At l________(less) it's warm.
4. You must be careful when you c________(cross) the street.
1.seen   2.traffic   3. least   4. cross
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