46. We / glad / see our friends after / long time.

A. We are glad seeing our friends after a long time.  B. We are glad of seeing our friends after a long time.

C. We are glad to see our friends after a long time.   D. We are glad to see our friends after such long time.

47. How long / it / you / get / your school bus?

A. How long does it take you to get to your school bus?

B. How long does it spend you to get to your school bus?

C. How long is it take you to get to your school bus?

D. How long does it take you get to your school bus?

48. While Mr. While / work / garden / Mrs. White / cook / kitchen.

A. While Mr. White was cooking in the garden, Mrs. White cooked in the kitchen.

B. While Mr. White cooked in the garden, Mrs. White was cooking in the kitchen.

C. While Mr. White was cooking in the garden and Mrs. White was cooking in the kitchen.

D. While Mr. White was cooking in the garden, Mrs. White was cooking in the kitchen.

49. I / happy / know / you / pass / entrance exam / become / student.

A. I am happy know that you have passed your entrance exam become a student.

B. I am happy to know that you have passed your entrance exam to become a student.

C. I am happy to know that you had passed your entrance exam to become a student.

D. I will be happy to know that you have passed your entrance exam to become a student.

50. Please / me know / you / able / finish work / time / I / ask / other man / help.

A. Please let me know whether you’ll be able to finish work on time or I will ask the other man for help.

B. Please let me know whether you be able to finish work on time or I will ask the other man for help.

C. Please let me know whether you’ll be able to finish work on time and I will ask the other man for help.

D. Please let me to know whether you’ll be able to finish work on time or I will ask the other man for help.