is there anything ( to do / do/doing) now ?

i want a ( can / tube/box/dozen/) pens

101 ấy bạn

1.They usually(have) have dinner at the restaurant.They (have) are having dinner there at the moment.

2.She always (sleep) sleeps for two hours every afternoon

3.It (be) is very hot in the summer

4.They (like) like picture.They (look) are looking at the picture right now

5.It (stay) stays at home from 7:00 A.M to 9:00 A.M every day

6.I frequentle (do) do my homework at night

7.My friends (not,know) don't know the man very well

8.He (leave) leaves home at 6:30 A.M and (go) goes home at 6:00 P.M every day

9.He (repair) repairs the car for her.He always (help) helps her do anything that she (need) needs

10.He (watch) is watching a good film with his parent at present

mik là fan của Kudo Shinichi!!!

a) gọi PT đường thẳng BC là : y =ax+b (d)

=> B thuộc (d) =>  -a +b = -1  => b= a-1

C thuộc (d) => 4a+b = 9   thay b =a -1 => 5a=10 => a= 2

                                                                         => b =2-1 =1

Vậy BC; y = 2x +1

b)  tại y =3 => BC: 2x+1 = 3 => x =1 => BC cắt  y= 3 tại  M(1 ; 3)

    Tại y =3 => 2y+x - 7 = 0 => x =1   =>  2y +x -7 =0 cắt y=3 tại M

=> 3 đườngthẳng đồng quy tại M(1;3)

c) BC:  y = 2x +1  với x =2 

=> y = 2.2+1 =5 => A(2;5) nằm trên BC => A;B;C thẳng hàng

T2 ???

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chibi dễ thw wá

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