IX. Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
Mary did not put any effort into learning English. She cannot speak with foreign partners in this project now.
A.Even Mary put great effort into learning English, she cannot speak with the foreign partners in this project now.
B.Mary did not put any effort into learning English, but she can speak with the foreign partners in this project now.
C.Although Mary did not put any effort into learning English, she couldn't speak with the foreign partners in this project.
D.If Mary had put her effort into learning English, she could speak with the foreign partners in this project now.