Cho tam giác ABC có G là trọng tâm.Một đường thẳng a thay đổi qua G cắt các cạnh AB,AClần lượt tại M,N.CMR:AB/AM+AC/AN không thay đổi khi a thay đổi

1.He was ........when he failed his driving car HOPE

2.The ............. of finding new oil reserves has been led to more drilling in the Gluf of Mexico NECCESSARY

3.He told me .................

A.smoke cigarettes

B.smoking cigarettes

C.not to smoke cigarettes

D.not smoking cigarettes

4.He left to school his hard life.

A.as if B.because

C.because of D.Though

5.The man over there is an artist ............father can speak 4 languages

A.who B.whose

C.whom D .which

Chuyển lại câu

6.James will ask the mechanic to repair his car

->James will have.................

7 Burning forests will lead to the destruction of wildlife habitat.(DESTROY)

->.........................

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