đúng+ko copy+ctlhn 10 điểm đáng vì mình cho ctlhn rồi, ko đc đòi hỏi nha

1.How old do you think this house is? * A.Do you know when the house is built? B.When do you think the house was built? C.When is the house built ? D.When do you think the house is built? 2." Does Jack know about your project". "Yes, I told him…………….to do" * A.what I have planned B.what was I planning C.what did I plan D.what I was planning 3.I have just .............................. a letter from my brother * A.written B.sent C.received D.bought 4.She has one of the biggest ………… in Britain. * A.collect B.collection C.collector D.collections 5.First aid for burns involves removing the source of the burn as soon as....... * A.possible B.well C.good D.can 6.The children…………………..to the zoo. * A.were enjoyed taking B.were enjoyed taken C.enjoyed being taken D.enjoyed taking 7.The cakes were too stale to eat. * A.The cakes weren't fresh enough to eat. B.The cakes weren't enough fresh to eat. C.The cakes were so stale in order to eat D.The cakes were very stale to be eaten. 8.I was made ....... hard by my teacher. * A.working B.to work C.worked D.work 9.).......... the heavy snow, she went out. * A.Despite the fact that B.Despite C.However D.Although 10.My sister looks ............... in the new dress * A.gracefully B.beautifully C.graceful D.beauty 11.They asked me……. I could help them. * A.if B.for C.about D.to

tính -4x(x+3)(x-4)-3x(x^2-x+1) 4x(x^2-x+3)-(x-6)(x-5) -3(x+1)(x-7)+7(x-5)(x-1) ai làm nhanh em cho trlhn ạ

Xác định hằng số a,b sao cho: x^3+ax^2+x+b chia cho x^2-x+2 dư -2x Mng giúp em với ,em cần gấp ạ

vẽ mầm cười NL : hé hé hay v Có lúc nào trên đường đời tấp nập Ta vô tình vịn phải đứa F0 Có lúc nào trên đường đời lông nhông Ta vô tình tông phải tay F1 Có những lúc ở công ty bận rộn Ta vô tình cãi lộn đứa F2 Có những lúc trong quán nhậu lai rai Ta F3 cụng chai thằng F4

giải giúp em với :( vote cho 5 sao ạ em cần gấp

`3x - 7\sqrt(x-1)=9` giúp mình vs mọi người

Chứng minh sin3x=2sin3x/2.cos3x/2

Giải hộ mk vs ạ mk đg rất cần cảm ơn trc ạ

bài 10 mn ạ, mong mn giúp đỡ e , em vote cho