阅读下面的短文,理解其大意,并从 A、B、C 三个选项中选出一个能填入空白处的最佳选项。
Can you ride a bike? Look! Many people 1 bikes on the road, and there 2 so many bikes, cars and buses on the road, so it is very important for riders 3 traffic rules. Last weekend, my cousin Tom 4 his new bike to visit me. He is good at riding, but he still follows all the rules carefully.
Little children can't ride bikes in the streets, 5 it is dangerous for 6.
When riding, you 7 keep your hands on the handlebars(车把手) all the time. You should ride on the right side of the road. Yesterday, I 8 a boy ride through a red light. A driver stopped quickly and kept him safe. Some riders 9 for the green light now, and it is a quiet moment on the road. Remember, 10 safe riding habits can help us stay away from danger.
()1. A. is riding B. are riding C. ride
()2. A. is B. are C. was
()3. A. to remember B. remembering C. remember
()4. A. rides B. rode C. is riding
()5. A. but B. because C. so
()6. A. they B. them C. their
()7. A. should B. shouldn't C. can't
()8. A. see B. saw C. sees
()9. A. wait B. are waiting C. waited
()10. A. have B. having C. has

1.B 2.B 3.A 4.B 5.B 6.B 7.A 8.B 9.B 10.B

我们逐题分析考点和选项：
1. 第1题：句首有提示词"Look!"，说明动作正在发生，要用现在进行时；主语Many people是复数，对应的be动词用are，所以选are riding。
2. 第2题：there be句型遵循就近原则，紧邻be动词的名词是复数的bikes，句子描述当下客观情况用一般现在时，所以be动词用are。
3. 第3题：本题考察固定句型"It is + 形容词 + for sb. to do sth."，表示“对某人来说做某事是……的”，要填不定式结构to remember。
4. 第4题：时间状语"Last weekend（上周末）"是过去的时间，句子要用一般过去时，ride的过去式是rode。
5. 第5题：后半句是解释“小孩子不能在街上骑车”的原因，表示“因为”用连词because。
6. 第6题：介词for后面要接人称代词的宾格形式，指代前面的Little children，对应的宾格是them。
7. 第7题：本句给出骑车的正确安全建议，表达“应该”用情态动词should。
8. 第8题：时间状语"Yesterday（昨天）"是过去的时间，句子用一般过去时，see的过去式是saw。
9. 第9题：句中有提示词"now"，说明动作正在进行，要用现在进行时，主语Some riders是复数，对应结构是are waiting。
10. 第10题：空格处在句中作主语，需要用动名词形式，所以填having。