A. grow B. grew C. have grown D. are growing

答案：C

时态语态题。现在完成时与一般过去时的区别是单选常考点，只要学生了解两种时态在时间表述上的本质区别，即可轻松应对。grow的动作明显发生在过去，现在也出现，将来会继续，所以排除B选项纯过去的grew。A选项和D选项描述纯现在，即忽略所有过去现在将来的区别，但是前面的句子特别强调发生变化，变化的着眼点是过去到现在的变化，所以选择C选项have grown，现在进行时描述的时间就是过去+现在。

29. - I am going to have lunch. Do you mind talking about it ______ lunch?

- All right. I’ll wait here in the office.

A. after B. before C. over D. until

答案：A

介词题。在看到第一句话的时候本以为考查的是over在……同时的知识点，难度较高。例如：Could you please have a talk with me over a cup of coffee?你能和我喝杯咖啡说说话吗？表示在喝咖啡的同时说话。但是看到第二句话立刻晕倒，另一个人说在这里等，那明显是午饭后再谈，所以答案为A选项after。只要不胡乱添加中文意思，就不会误选B选项和D选项。

30. - The weatherman on the news said it might rain later on this afternoon.

- Well, I ______ take my umbrella along with me today.

A. can B. may C. could D. must

答案：D

情态动词题。此题出的其实比较怪异，最合适的选项应该是should，但是选项里没有，所以只能按照给出的选项进行排除。can和could用于描述能力，在这里不合适。此题选择must，但是命题思路并不是很好，原因在于上文中提到的might很容易对应出may的选项，而这里用may似乎并没有任何问题。

31. - You seem busy these days.

- Yes. I’m looking for a house. It’s really not easy to find ______ with a garden.

A. this B. one C. it D. that

答案：B

代词题。本题的A选项和D选项基本可以视作同义选项排除，真正考察的区别也就是one和it这对常考代词的区别。it指代前面一个确定的名词概念，而one则指代前面名词范围中不确定的某一个。这里前面的a house明显不是某所确定的房子，说话者只是在找房，并没有确定哪一所，所以应该是B选项one。另外的一个小思路，之前又连续8道题没有选过B了啊……

32. Although the Eiffel Tower ______ to last for 20 years, it is still standing today.

A. has designed B. had designed C. is designed D. was designed