2019屆高考英語基礎鞏固復習：Unit4基礎鞏固練習（新人教版必修四）
c. talking；sat d. talked；sitting
解析：選c。本句的謂語動詞是entered. . . and sat，smiling and talking是現在分詞作狀語，表示伴隨動作。
4. (XX年西城質檢)the food，________good，was soon sold out when it was taken to the market.
a. tasted b. being tasted
c. tasting d. having tasted
解析：選c。分詞作非限制性定語，邏輯主語the food與taste是主動關系，故用現在分詞。
5. he sent me an email，________ to get some further information for his research.
a. hoped b. hoping
c. to hope d. hope
解析：選b。考查非謂語動詞。根據語境分析，此處用v. ing形式作伴隨狀語，表示在sent me an email時的愿望。