13.“Why didn’t he come to the party?” – “....... I forgot to invite him.”

In order that            B. Before                     C. As                    D. Because

14.We took a flashlight................. we could see our way in the dark.

that                           B. since                          C. in order that  D. as 15.He’s too tired to go................. working.

on                             B. with                      C. for                    D. at 16.................. your coat, it’s cold outside.

Put on                       B. Put off                   C. Take on            D. Take off 17.Remember to................. off your shoes when you are in a Japanese house.

make                       B. turn                           C. take                D. give 18.My mother was cooking................. somebody came and knocked at the door.

while                       B. when                       C. as soon as         D.after

19.I hope you will finish all your homework................ we come home.

although                  B. so that                     C. by the time       D. after

20. “Have you finished the book?” – “Almost. You can have it................ I’m done.”

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

LESSON 26

I.            Choose the word that has the different stress from the others.

I.        Find the word which has a different stress from the other words.

1.        A. cognitive                      B. abandon                        C. emotion                        D. important

2.        A. disappointed                B. preparation                   C. adolescence                  D. communicate

3.        A. pressure                        B. convince                       C. friendship                     D. guidance

4.        A. adolescence                  B. emergency                    C. independence               D. disappoint

5.        A. cognitive                      B. confident                      C. frustrated                      D. discipline

6.        A. adolescence                  B. adulthood                     C. cognitive                       D. concentrate

7.        A. confident                      B. delighted                      C. depressed                     D. embarrassed

8.        A. emergency                    B. frustrated                      C. independence               D. decision

9.        A. guidance                       B. informed                       C. childhood                     D. pressure

10.     A. adolescence                  B. disappointed                 C. independence               D. emotional

Bài 14: Cho tam giác ABC có BC = 16 cm, AB = 20 cm, AC = 12 cm.

a/ Chứng minh tam giác ABC là tam giác vuông.                                                   (1,5 điểm)   

b/ Tính sin A, t B và số đo góc B, góc A.                                                                 (2 điểm)  

c/ Vẽ đường cao CH. Tính các độ dài CH , BH, HA.                                              (1,5 điểm)   

d/ Vẽ đường phân giác CD của ABC. Tính độ dài DB, DA, CD           

e/ Đường thẳng vuông góc với BC tại B cắt tia CH tại K. Tính độ dài BK