Viết lại câu sao cho nghĩa không đổi 4. My sister began to study English a year ago.,My sister ____________________________________________,5. Scientists began to fight against AIDS in 1980.,Scientists have _____________________________________________ Scientists have,6. The Browns have lived in London for 20 years.,The Browns began _____________________________________ The Browns began,7. John has worked for this electronics firm since 1999.,John started __ John started _____________________________________________,8. Jack and Jill have learned how to drive for2 weeks.,Jack and Jill started __________________________________ Jack and Jill started,9. How long hae you studied English?,When _____________________________________________________,10. When did you begin to do research on lung cancer?,How long _________________________________________________

Question

Viết lại câu sao cho nghĩa không đổi 4.  My sister began to study English a year ago.,My sister ____________________________________________,5.  Scientists began to fight against AIDS in 1980.,Scientists have _____________________________________________ Scientists have,6.  The Browns have lived in London for 20 years.,The Browns began _____________________________________ The Browns began,7. John has worked for this electronics firm since 1999.,John started __ John started _____________________________________________,8.  Jack and Jill have learned how to drive for2 weeks.,Jack and Jill started __________________________________ Jack and Jill started,9.  How long hae you studied English?,When _____________________________________________________,10.  When did you begin to do research on lung cancer?,How long _________________________________________________

Accepted Answer

4. My sister has been studying English for a year.
5. Scientists have been fighting against AIDS since 1980.
6. The Browns began living in London 20 years ago.
7. John started working for this electronics firm in 1999.
8. Jack and Jill started learning how to drive 2 weeks ago.
9. When did you start studying English?
10. How long have you been doing research on lung cancer?