Exercise 4: Put the verbs in brackets into the correct tenses Type III 26 If you hadn't been in such a hurry you (not put) sugar into the sauce instead of salt. 27 If I (be) ready when he called he would have taken me with him. 28 She had a headache; otherwise she (come) with us. 29 If she had listened to my directions she (not turn) down the wrong street. 30 If you (look) at the engine for a moment you would have seen what was missing. 31 Rome (be captured) by her enemies if the geese hadn't cackled. 32 He would have been arrested if he (try) to leave the country. 33 I (take) a taxi if I had realized that it was such a long way. 34 You (save) me a lot of trouble if you had told me where you were going. 35 They would have forced their way into the house if I (not call) for help. 36 If he had put out his pipe before putting it in his pocket he (not burn) a hole in his coat.

Một con lắc lò xo tro thẳng đứng bao gồm lo xo nhẹ có chiều dài tự nhiên lo gắn với một vật mo=0,2kg. Kích thích cho hệ dđđh với tần số f=2,5 Hz, trong quá trình dđ chiều dài của con lắc biến thiên từ 20cm đến 24cm . Chọn gốc thời gian là lúc vật đi qua vị trí có ly độ xo=căn2 cm theo chiều dương. Biết ptdđ: x=2cos( 5pi - pi\4). a. Xác định lo b. Xác định khoản thời gian nhỏ nhất kể từ thời điểm vật có li độ x=1 đến thời đểm vật có vận tốc v= -5can2 pi(cm\s)

trình bày phương pháp hóa học nhận biết dung dịch HCl va dung dich Na2CO3

Exercise 4: Put the verbs in brackets into the correct tenses Type III 16 If you had told me that he never paid his debts I (not lend) him the money. 17 If you (not sneeze) he wouldn't have known that we were there. 18 If you (put) some mustard in the sandwiches they would have tasted better. 19 The hens (not get) into the house if you had shut the door. 20 If he had known that the river was dangerous he (not try) to swim across it. 21 If you (speak) more slowly he might have understood you. 22 If he had known the whole story he (not be) so angry. 23 I shouldn't have eaten it if I (know) that there was ginger in it. 24 If I (try) again I think that I would have succeeded. 25 You (not get) into trouble if you had obeyed my instructions.

Viết các pthh xảy ra theo sơ đồ ạ Vote5 sao

Giải thích cách dùng a/an,some,any,much,many,a lot of.Cm

tìm x ∈ N , biết a, 321 + x = 2016 b, 48 - 3(x + 5 ) = 24 c, 1230 : 3(x - 20 ) = 10 d, x + 37= 50 e , 2. x - 3 = 11 f, (2 + x ) : 5 = 6

Bài tập :Trên đường thẳng d lấy 3 điểm A,B,C (C nằm giữa A và B ) trên cùng nửa mặt phẳng bờ là đường thẳng d vẽ 2 tia Ax và By vuông góc với đường thẳng d . Trên tia Ax lấy điểm N tia vuông góc với NC tại C cắt Ax tại M . Kẻ CE vuông góc với MN tại E , gọi I là trung điểm CM a) Chứng minh 4 điểm A,C.E.M cùng thuộc đường tròn tâm I b) Chứng minh : AM . BN = AC . BC c) Gỉa sử A,B,N cố định .tìm vị trí điểm C để diện tích tứ giác ABNM lớn nhất

( 8x - 3 ) ( 3x + 2 ) - ( 4x + 7 ) ( x + 4 ) = ( 4x + 1 ) ( 5x - 1 ) Tìm x

Exercise 4: Put the verbs in brackets into the correct tenses Type III 1 If I had known that you were in hospital I (visit) you. 2 The ground was very soft. But for that, my horse (win). 3 If you (arrive) ten minutes earlier you would have got a seat. 4 You would have seen my garden at its best if you (be) here last week. 5 But for his quickness I (be) killed. 6 I shouldn't have believed it if I (not see) it with my own eyes. 7 If he had slipped he (fall) 500 meters. 8 If he had asked you, you (accept)? 9 If I (had) a map I would have been all right. 10 If I (know) that you were coming I'd have baked a cake. 11 I (offer) to help him if I had realized that he was ill. 12 If you had left that wasp alone it (not sting) you. 13 If I (realize) what a bad driver you were I wouldn't have come with you. 14 If I had realized that the traffic lights were red I (stop). 15 But for the fog we (reach) our destination ages ago.