Cho ΔABC cân tại A,đường cao BH,CK cắt nhau tại I.                                             a)Cho góc A=50 độ, tính góc HIK                                                                           b)Chứng minh ΔAHB=ΔAKC và ΔAKH cân                                                           c)Chứng minh tứ giác BKHC

No one is this class is as tall as Tam. ->Tam is_______________________        We were too late to see the first film. -> We weren't___________________  When did you begin to study French? -> How long____________________   It isn't as warm in Canada as it is in Mexico. -> Mexico is_______________        I have never seen that play before -> It's the_________________________   It is such a heavy box that I can't lift it. -> The box_____________________    The sun is much hotter than the moon. -> The moon isn't ______________

She drinks a lot of milk but her sister drinks more. -> She doesn't__________  Math is very difficult but English is more difficult. ->Math isn't______________ The suitcase isn't light enough for the boy to lift uo. -> The suitcase is_______ We began to buid this house 5 months ago.->We have___________________ English is easier than French. -> French_____________________________      A truck is bigger than a taxi. -> A taxi isn't____________________________           The coffee is so strong that I can't drink it. -> The coffee is_______________         

He has a harsh voice,but she has a sweet voice (different).                                            -> His voice

Tìm x : x.(x+4)² -(x-3)³ -x.(x-2)=4

1.They didn't try (learn)____all new words they (come)___across.                   2.Nam isn't here.He just (go)___out for a walk.                                                           3.We just (come)___from Paris and we (come)____to see you in a few minutes.                                                                                                                4.They (move)__to London last week but I (not hear)____ anything from them yet.                                                                                                         5.Just a minute! I (look up______that word in the dictionary.                                               6.You must tell me what you (do)______since I last saw you.

1.Mai and Nam (go)____to the church twice a week.                                                2.My aunt (have)____to go now.                                                                                 3.Yesterday (be)_____the first day of the new school year.                                         4.She (cut)_______the trees in the garden now.                                                 5.They already (finish)______their homewwork.                                                            6.We (read)______books in the library at this time last Monday.                             7.It's very happy (meet)______them again.                                                               8.I'm sure they (tell)______ us about themselves soon.                                  

1) a.neon  b.report  c.pedestrian  d.special                                                           2) a.weather  b.athletic  c.thereforce  d.them                                                             3) a.pollution  b.lunar  c.industry  d.tutor                                                               4) a.menu  b.cucumber  c.uniform  d.crutch                                                          5) a.wisdom  b.stretcher  c.husband  d.outdoorss                                             6) a.urban  b.academic  c.calendar  d.lawyer