阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。
Nila sat alone on the bus. Her older sister, Lexi, was one seat ahead, acting as if this was the best day ever. But for Nila, it was the worst. It was the last day of swimming lessons. Test Day.
"If I pass my test, I can sign up for Junior Lifeguarding over the summer," Nila heard Lexi telling her friend Jess. "You're the best swimmer in the class," Jess said. "There's just no way you wouldn't pass." Maybe she could talk to Lexi about the test, who passed Level 4 several summers ago.
"I thought sisters were supposed to help each other actively," Nila whispered to the window. An hour later, she held the edge of the pool, shaking. "For the last part of the test, you'll all be swimming the width of the pool," the instructor, Nate, told the class. "Can we swim in the shallow end?" Nila asked. "Nope," Nate said cheerfully. "To pass Level 4, it has to be the deep end."
Nila was nervous. She didn't know if she could swim all the way across without touching the bottom. "I'll be watching from the other side," Nate said. "Ready?" No! Nila thought. But Nate put the whistle to his lips and blew. Nila took a deep breath and pushed off. Lexi moved up and down, feeling light. She completed smoothly and passed Level 7! A kid from her class bumped into her, but she just smiled at him. She liked everyone right now. Nila, too—even though she'd been such a pest earlier. Where was she, anyway?
After a minute, Lexi spotted her sister crossing the pool. Nila was way behind the others. As Nila neared the middle of the pool, she stopped. "Keep going," Lexi called. "You can do it!" When Nila found out her position, her heart sank. Only halfway across! Some kids in her class were already at the wall, playing and talking. Nate was bending over to talk to one of the kids. He didn't see her. Better keep going, she thought. But she was tired, Lexi kept her eyes on her sister's slow progress.
注意:1.续写词数应为150左右;2.请按如下格式在答题卡的相应位置作答。
Paragraph 1:
As Lexi watched, Nila's head dipped briefly underwater before it resurfaced (再次浮出水面).
Paragraph 2:
Just then, Nila felt someone's arms grabbing her from behind.