Vẽ AOB nhọn và tia OC nằm giữa OA và OB. Vẽ tia OM sao cho OA là tia phân giác của MOC. Vẽ tia ON sao cho OB là tia phân giác của CON. Chứng minh MON = 2 AOB

Cần vẽ hình!!!

Trên một mặt phẳng vẽ ba tia OA, OB, OC sao cho AOC và BOC không kề. Biết AOC =130 BOC= 70 Tính AOB

Trên một mặt phẳng vẽ ba tia OA, OB, OC sao cho AOC và BOC không kề. Biết AOC =130 BOC= 70 Tính AOB. Nhớ vẽ hình

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

1/ His teacher regrets _______ him that his application for the job has been turned down.

           A. tell             B. to tell                     C. telling                    D. tells

2/ The workers stopped _______ a rest because they felt tired.

           A. take B. to take                   C. taking                    D. took

3. At school, students usually take part in_______money for charity.

A. raised                B. to raise                     C. raising               D. raise

4.  Let's__________for a walk.

A. go                       B. to go                            C. going                  D. went

5. Why don't you consider to visit me? I really look forward to_______you.

A. see                     B. seen                   C. seeing                D. saw

6.  It's impolite___________people about their salary.

A. asked                B. to ask                      C. ask                     D. asking

7.  Don't_________in class.

A. talking              B. to talk                       C. talked                D. talk

8. Students are always interested in____________ a party.

A. to have              B. have                       C. having               D. had

9.___________the exams, students have to learn hard.

A. To pass             B. Passed                       C. Pass                   D. Passing

10. Would you please show me _________ yahoo messenger?

a. to use                     b. using                      c. how can I use          d. how to use

11. Mary told me _________ to go to the bank

a. don’t forget             b. not forget                c. not to forget d. should not forget

14. Let him _________ it himself

a. do                          b. to do           c. does                       d. doing

15. School children are looking forward to _________ on holiday

a. go                          b. be going                 c. going                      d. went

16. 

Mr. Minh _________ wearing a crash helmet when he goes somewhere on his motorbike

a. used to                    b. is used to                c. is using                   d. used