I don’t know when he ____. But if he ____, I’ll ring you up.

A．comes, will come	B．will come, will come
C．comes, comes	D．will come, comes

阅读下面的短文在空白处填入合适的单词，首字母已经给出。
The doorbell rang and Mrs. Carson opened the front floor. Her heart sank_小题1:__she saw Mrs. Burbridge.__ 小题2:__Mrs Burbridge called; she stayed for hours and hours. “Good afternoon, Mrs. Carson,” Mrs. Burbridge said. “Do come in,”Just__小题3:_Mrs Carson had feared, Mrs. Burbridge stayed for several hours. It was nearly six o’clock_小题4:_ Mr. Carson would be home from work soon...
Mrs. Carson kept wondering_小题5:__she would ask Mrs. Burbridge to leave without making her angry. “Has your husband got home from work__小题6:,”Mrs. Carson asked. “Oh, yes,” Mrs. Burbridge answered. “He always gets home at about five o’clock...” “It’s nearly six o’clock. Won’t he be getting worried about you?” Mrs. Carson said.
“I thought of__小题7:_,”Mrs Burbridge said. “_小题8:_ it’s so pleasant here. We’ve had such a lovely afternoon. You know __小题9:__I’ll do?” I’ll ring up my husband_小题10:__tell him to come round, too. May I use your phone, please?”

When I was at university, I studied very hard. But a lot of my friends did very l    work. Some just did enough to pass the exams. Others didn’t do quite enough. Fred Braines was such a student. He spent more time drinking in the T   House than working in the library.
Once at the end of the term, we had to take an important test in Chinese. The test had 100 questions. Beside each question we had to write “True” or “False”. While I was studying in my room, Fred was watching TV. Fred usually worried a lot the night before a test. But on that night he looked very e   . Then he told me of his idea.
“It’s very simple. There are 100 questions and I have to get 50 right to pass the test. I will take a coin into the examination room. I haven’t studied a Chinese book for months, so I will toss (抛) the coin. In this way, I’m sure I’ll get h    of the questions right.”
The next day, Fred came happily into the examination room. As he sat tossing a coin for half an hour, he wrote down his answers. Then he left, half an hour b    the rest of us.
The next day, Fred met his Chinese teacher at the school gate. “Oh, good,” he said. “I am sure you have got the r    of the test. Did I pass the test? ”
The teacher looked at him and smiled, “Ah, it’s you, Braines. Just a minute. ” Then the teacher reached his pocket and took out a coin. He threw it into the air, caught in his hand and looked at it. “I am sorry, Braines, you f   ! ”