cho tgiac ABC cân tại A lấy điểm M,N lần lượt trên cạnh AB và AC sao cho AM=AN
a) chứng minh MN//BC
b)Chứng minh BM=CN
c) cminh Tam giác AMN = Tam giác CNM

3(5x-1)-x(x-2)+x²-13x=7

pay back,get down,believe in,watch out,tell off,pull out,see off,agree with
save up,make up 
hãy điền các từ sau vào chỗ trống
1.I have seen a lot of people brust into tears when they______ their friends and family
2.do you________ me that didn't try hard enough ?
3.Has your teacher ever_____you_____?No she hasn't. She is a nice teacher
4.last week I borrowed Tom&50 to buy a book but I_______ him yet
5.My boyfriend walked towards me anh then he________ a small gift
6.I never_________ in ghosts but my brother is always scared of them
7.________!there is a car coming
8.I hate the way Peter tells lies and_________ stories to cheat people
9.Have you________________ enough to buy a new car
10.I promised my mothernot to _______ her_____, so I tried my best to get high scores

I.    Choose a word in each line that has different stress pattern

1.   A. cognitive                B. adulthood               C. confident                D. encourage

2.   A. delighted                B. manage                   C. convince                 D. depress

3.   A. confident                B. abandon                  C. depressed               D. important

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

5.   A. pressure                  B. decision                  C. friendship               D. guidance

hoàn thành các câu dưới đây bằng cách điền từ thích hợp vào chỗ trống
1.Peter always look_________ his senior colleagues
2.Mary is ____________ a singing competition
3.Nothing can________ the loss of my cat 
4. Jim didn't work yesterday because he came _____flu
5.my mother always reminds me to stay_______bad people
6.as a child I used to wait _______ the present from santan clause
7.i can't put ________his selfihness any more 
8.they argue a lot they seem to never______ each other
9.last year she got__________an operation
10.last weekwe got_______ all the old furniture and bought new one